Make ctx global

8 files changed, 168 insertions, 168 deletions

diff --git a/src/methods/cipher_test/cipher_test.c b/src/methods/cipher_test/cipher_test.c
index 0cec4b0..52bca0f 100644
--- a/src/methods/cipher_test/cipher_test.c
+++ b/src/methods/cipher_test/cipher_test.c
@@ -70,49 +70,49 @@ static void method_destroy(fastd_method_t *method) {
 	free(method);
 }
 
-static size_t method_key_length(fastd_context_t *ctx UNUSED, const fastd_method_t *method) {
+static size_t method_key_length(const fastd_method_t *method) {
 	return method->cipher_info->key_length;
 }
 
-static fastd_method_session_state_t* method_session_init(fastd_context_t *ctx, const fastd_method_t *method, const uint8_t *secret, bool initiator) {
+static fastd_method_session_state_t* method_session_init(const fastd_method_t *method, const uint8_t *secret, bool initiator) {
 	fastd_method_session_state_t *session = malloc(sizeof(fastd_method_session_state_t));
 
-	fastd_method_common_init(ctx, &session->common, initiator);
+	fastd_method_common_init(&session->common, initiator);
 	session->method = method;
 	session->cipher = fastd_cipher_get(method->cipher_info);
 	session->cipher_state = session->cipher->init(secret);
 
-	pr_warn(ctx, "using cipher-test method; this method must be used for testing and benchmarks only");
+	pr_warn("using cipher-test method; this method must be used for testing and benchmarks only");
 
 	return session;
 }
 
-static bool method_session_is_valid(fastd_context_t *ctx, fastd_method_session_state_t *session) {
-	return (session && fastd_method_session_common_is_valid(ctx, &session->common));
+static bool method_session_is_valid(fastd_method_session_state_t *session) {
+	return (session && fastd_method_session_common_is_valid(&session->common));
 }
 
-static bool method_session_is_initiator(fastd_context_t *ctx UNUSED, fastd_method_session_state_t *session) {
+static bool method_session_is_initiator(fastd_method_session_state_t *session) {
 	return fastd_method_session_common_is_initiator(&session->common);
 }
 
-static bool method_session_want_refresh(fastd_context_t *ctx, fastd_method_session_state_t *session) {
-	return fastd_method_session_common_want_refresh(ctx, &session->common);
+static bool method_session_want_refresh(fastd_method_session_state_t *session) {
+	return fastd_method_session_common_want_refresh(&session->common);
 }
 
-static void method_session_superseded(fastd_context_t *ctx, fastd_method_session_state_t *session) {
-	fastd_method_session_common_superseded(ctx, &session->common);
+static void method_session_superseded(fastd_method_session_state_t *session) {
+	fastd_method_session_common_superseded(&session->common);
 }
 
-static void method_session_free(fastd_context_t *ctx UNUSED, fastd_method_session_state_t *session) {
+static void method_session_free(fastd_method_session_state_t *session) {
 	if (session) {
 		session->cipher->free(session->cipher_state);
 		free(session);
 	}
 }
 
-static bool method_encrypt(fastd_context_t *ctx, fastd_peer_t *peer UNUSED, fastd_method_session_state_t *session, fastd_buffer_t *out, fastd_buffer_t in) {
+static bool method_encrypt(fastd_peer_t *peer UNUSED, fastd_method_session_state_t *session, fastd_buffer_t *out, fastd_buffer_t in) {
 	size_t tail_len = alignto(in.len, sizeof(fastd_block128_t))-in.len;
-	*out = fastd_buffer_alloc(ctx, in.len, alignto(COMMON_HEADBYTES, 16), sizeof(fastd_block128_t)+tail_len);
+	*out = fastd_buffer_alloc(in.len, alignto(COMMON_HEADBYTES, 16), sizeof(fastd_block128_t)+tail_len);
 
 	if (tail_len)
 		memset(in.data+in.len, 0, tail_len);
@@ -134,23 +134,23 @@ static bool method_encrypt(fastd_context_t *ctx, fastd_peer_t *peer UNUSED, fast
 
 	fastd_buffer_free(in);
 
-	fastd_method_put_common_header(ctx, out, session->common.send_nonce, 0);
+	fastd_method_put_common_header(out, session->common.send_nonce, 0);
 	fastd_method_increment_nonce(&session->common);
 
 	return true;
 }
 
-static bool method_decrypt(fastd_context_t *ctx, fastd_peer_t *peer, fastd_method_session_state_t *session, fastd_buffer_t *out, fastd_buffer_t in) {
+static bool method_decrypt(fastd_peer_t *peer, fastd_method_session_state_t *session, fastd_buffer_t *out, fastd_buffer_t in) {
 	if (in.len < COMMON_HEADBYTES)
 		return false;
 
-	if (!method_session_is_valid(ctx, session))
+	if (!method_session_is_valid(session))
 		return false;
 
 	uint8_t in_nonce[COMMON_NONCEBYTES];
 	uint8_t flags;
 	int64_t age;
-	if (!fastd_method_handle_common_header(ctx, &session->common, &in, in_nonce, &flags, &age))
+	if (!fastd_method_handle_common_header(&session->common, &in, in_nonce, &flags, &age))
 		return false;
 
 	if (flags)
@@ -160,7 +160,7 @@ static bool method_decrypt(fastd_context_t *ctx, fastd_peer_t *peer, fastd_metho
 	fastd_method_expand_nonce(nonce, in_nonce, sizeof(nonce));
 
 	size_t tail_len = alignto(in.len, sizeof(fastd_block128_t))-in.len;
-	*out = fastd_buffer_alloc(ctx, in.len, 0, tail_len);
+	*out = fastd_buffer_alloc(in.len, 0, tail_len);
 
 	int n_blocks = block_count(in.len, sizeof(fastd_block128_t));
 
@@ -174,9 +174,9 @@ static bool method_decrypt(fastd_context_t *ctx, fastd_peer_t *peer, fastd_metho
 		return false;
 	}
 
-	if (!fastd_method_reorder_check(ctx, peer, &session->common, in_nonce, age)) {
+	if (!fastd_method_reorder_check(peer, &session->common, in_nonce, age)) {
 		fastd_buffer_free(*out);
-		*out = fastd_buffer_alloc(ctx, 0, 0, 0);
+		*out = fastd_buffer_alloc(0, 0, 0);
 	}
 
 	fastd_buffer_free(in);
diff --git a/src/methods/common.c b/src/methods/common.c
index 166d3ab..17722cf 100644
--- a/src/methods/common.c
+++ b/src/methods/common.c
@@ -27,11 +27,11 @@
 #include "common.h"
 
 
-void fastd_method_common_init(fastd_context_t *ctx, fastd_method_common_t *session, bool initiator) {
+void fastd_method_common_init(fastd_method_common_t *session, bool initiator) {
 	memset(session, 0, sizeof(*session));
 
-	session->valid_till = fastd_in_seconds(ctx, conf.key_valid);
-	session->refresh_after = fastd_in_seconds(ctx, conf.key_refresh - fastd_rand(ctx, 0, conf.key_refresh_splay));
+	session->valid_till = fastd_in_seconds(conf.key_valid);
+	session->refresh_after = fastd_in_seconds(conf.key_refresh - fastd_rand(0, conf.key_refresh_splay));
 
 	if (initiator) {
 		session->send_nonce[COMMON_NONCEBYTES-1] = 3;
@@ -42,7 +42,7 @@ void fastd_method_common_init(fastd_context_t *ctx, fastd_method_common_t *sessi
 	}
 }
 
-bool fastd_method_is_nonce_valid(fastd_context_t *ctx, const fastd_method_common_t *session, const uint8_t nonce[COMMON_NONCEBYTES], int64_t *age) {
+bool fastd_method_is_nonce_valid(const fastd_method_common_t *session, const uint8_t nonce[COMMON_NONCEBYTES], int64_t *age) {
 	if ((nonce[0] & 1) != (session->receive_nonce[0] & 1))
 		return false;
 
@@ -57,7 +57,7 @@ bool fastd_method_is_nonce_valid(fastd_context_t *ctx, const fastd_method_common
 	*age >>= 1;
 
 	if (*age >= 0) {
-		if (fastd_timed_out(ctx, &session->reorder_timeout))
+		if (fastd_timed_out(&session->reorder_timeout))
 			return false;
 
 		if (*age > 64)
@@ -67,7 +67,7 @@ bool fastd_method_is_nonce_valid(fastd_context_t *ctx, const fastd_method_common
 	return true;
 }
 
-bool fastd_method_reorder_check(fastd_context_t *ctx, fastd_peer_t *peer, fastd_method_common_t *session, const uint8_t nonce[COMMON_NONCEBYTES], int64_t age) {
+bool fastd_method_reorder_check(fastd_peer_t *peer, fastd_method_common_t *session, const uint8_t nonce[COMMON_NONCEBYTES], int64_t age) {
 	if (age < 0) {
 		size_t shift = age < (-64) ? 64 : ((size_t)-age);
 
@@ -79,15 +79,15 @@ bool fastd_method_reorder_check(fastd_context_t *ctx, fastd_peer_t *peer, fastd_
 		session->receive_reorder_seen |= (1 << (shift-1));
 
 		memcpy(session->receive_nonce, nonce, COMMON_NONCEBYTES);
-		session->reorder_timeout = fastd_in_seconds(ctx, conf.reorder_time);
+		session->reorder_timeout = fastd_in_seconds(conf.reorder_time);
 		return true;
 	}
 	else if (age == 0 || session->receive_reorder_seen & (1 << (age-1))) {
-		pr_debug(ctx, "dropping duplicate packet from %P (age %u)", peer, (unsigned)age);
+		pr_debug("dropping duplicate packet from %P (age %u)", peer, (unsigned)age);
 		return false;
 	}
 	else {
-		pr_debug2(ctx, "accepting reordered packet from %P (age %u)", peer, (unsigned)age);
+		pr_debug2("accepting reordered packet from %P (age %u)", peer, (unsigned)age);
 		session->receive_reorder_seen |= (1 << (age-1));
 		return true;
 	}
diff --git a/src/methods/common.h b/src/methods/common.h
index 510ad3f..ea4a13a 100644
--- a/src/methods/common.h
+++ b/src/methods/common.h
@@ -46,34 +46,34 @@ typedef struct fastd_method_common {
 } fastd_method_common_t;
 
 
-void fastd_method_common_init(fastd_context_t *ctx, fastd_method_common_t *session, bool initiator);
-bool fastd_method_is_nonce_valid(fastd_context_t *ctx, const fastd_method_common_t *session, const uint8_t nonce[COMMON_NONCEBYTES], int64_t *age);
-bool fastd_method_reorder_check(fastd_context_t *ctx, fastd_peer_t *peer, fastd_method_common_t *session, const uint8_t nonce[COMMON_NONCEBYTES], int64_t age);
+void fastd_method_common_init(fastd_method_common_t *session, bool initiator);
+bool fastd_method_is_nonce_valid(const fastd_method_common_t *session, const uint8_t nonce[COMMON_NONCEBYTES], int64_t *age);
+bool fastd_method_reorder_check(fastd_peer_t *peer, fastd_method_common_t *session, const uint8_t nonce[COMMON_NONCEBYTES], int64_t age);
 
 
-static inline bool fastd_method_session_common_is_valid(fastd_context_t *ctx, const fastd_method_common_t *session) {
+static inline bool fastd_method_session_common_is_valid(const fastd_method_common_t *session) {
 	if (session->send_nonce[0] == 0xff && session->send_nonce[1] == 0xff)
 		return false;
 
-	return (!fastd_timed_out(ctx, &session->valid_till));
+	return (!fastd_timed_out(&session->valid_till));
 }
 
 static inline bool fastd_method_session_common_is_initiator(const fastd_method_common_t *session) {
 	return (session->send_nonce[COMMON_NONCEBYTES-1] & 1);
 }
 
-static inline bool fastd_method_session_common_want_refresh(fastd_context_t *ctx, const fastd_method_common_t *session) {
+static inline bool fastd_method_session_common_want_refresh(const fastd_method_common_t *session) {
 	if (session->send_nonce[0] == 0xff)
 		return true;
 
-	if (fastd_method_session_common_is_initiator(session) && fastd_timed_out(ctx, &session->refresh_after))
+	if (fastd_method_session_common_is_initiator(session) && fastd_timed_out(&session->refresh_after))
 		return true;
 
 	return false;
 }
 
-static inline void fastd_method_session_common_superseded(fastd_context_t *ctx, fastd_method_common_t *session) {
-	struct timespec valid_max = fastd_in_seconds(ctx, conf.key_valid_old);
+static inline void fastd_method_session_common_superseded(fastd_method_common_t *session) {
+	struct timespec valid_max = fastd_in_seconds(conf.key_valid_old);
 
 	if (timespec_after(&session->valid_till, &valid_max))
 		session->valid_till = valid_max;
@@ -91,19 +91,19 @@ static inline void fastd_method_increment_nonce(fastd_method_common_t *session)
 	}
 }
 
-static inline void fastd_method_put_common_header(fastd_context_t *ctx, fastd_buffer_t *buffer, const uint8_t nonce[COMMON_NONCEBYTES], uint8_t flags) {
-	fastd_buffer_pull_head_from(ctx, buffer, nonce, COMMON_NONCEBYTES);
-	fastd_buffer_pull_head_from(ctx, buffer, &flags, 1);
+static inline void fastd_method_put_common_header(fastd_buffer_t *buffer, const uint8_t nonce[COMMON_NONCEBYTES], uint8_t flags) {
+	fastd_buffer_pull_head_from(buffer, nonce, COMMON_NONCEBYTES);
+	fastd_buffer_pull_head_from(buffer, &flags, 1);
 }
 
-static inline void fastd_method_take_common_header(fastd_context_t *ctx, fastd_buffer_t *buffer, uint8_t nonce[COMMON_NONCEBYTES], uint8_t *flags) {
-	fastd_buffer_push_head_to(ctx, buffer, flags, 1);
-	fastd_buffer_push_head_to(ctx, buffer, nonce, COMMON_NONCEBYTES);
+static inline void fastd_method_take_common_header(fastd_buffer_t *buffer, uint8_t nonce[COMMON_NONCEBYTES], uint8_t *flags) {
+	fastd_buffer_push_head_to(buffer, flags, 1);
+	fastd_buffer_push_head_to(buffer, nonce, COMMON_NONCEBYTES);
 }
 
-static inline bool fastd_method_handle_common_header(fastd_context_t *ctx, const fastd_method_common_t *session, fastd_buffer_t *buffer, uint8_t nonce[COMMON_NONCEBYTES], uint8_t *flags, int64_t *age) {
-	fastd_method_take_common_header(ctx, buffer, nonce, flags);
-	return fastd_method_is_nonce_valid(ctx, session, nonce, age);
+static inline bool fastd_method_handle_common_header(const fastd_method_common_t *session, fastd_buffer_t *buffer, uint8_t nonce[COMMON_NONCEBYTES], uint8_t *flags, int64_t *age) {
+	fastd_method_take_common_header(buffer, nonce, flags);
+	return fastd_method_is_nonce_valid(session, nonce, age);
 }
 
 
diff --git a/src/methods/composed_gmac/composed_gmac.c b/src/methods/composed_gmac/composed_gmac.c
index c848bbf..887fb5c 100644
--- a/src/methods/composed_gmac/composed_gmac.c
+++ b/src/methods/composed_gmac/composed_gmac.c
@@ -112,14 +112,14 @@ static void method_destroy(fastd_method_t *method) {
 }
 
 
-static size_t method_key_length(fastd_context_t *ctx UNUSED, const fastd_method_t *method) {
+static size_t method_key_length(const fastd_method_t *method) {
 	return method->cipher_info->key_length + method->gmac_cipher_info->key_length;
 }
 
-static fastd_method_session_state_t* method_session_init(fastd_context_t *ctx, const fastd_method_t *method, const uint8_t *secret, bool initiator) {
+static fastd_method_session_state_t* method_session_init(const fastd_method_t *method, const uint8_t *secret, bool initiator) {
 	fastd_method_session_state_t *session = malloc(sizeof(fastd_method_session_state_t));
 
-	fastd_method_common_init(ctx, &session->common, initiator);
+	fastd_method_common_init(&session->common, initiator);
 	session->method = method;
 
 	session->cipher = fastd_cipher_get(method->cipher_info);
@@ -148,23 +148,23 @@ static fastd_method_session_state_t* method_session_init(fastd_context_t *ctx, c
 	return session;
 }
 
-static bool method_session_is_valid(fastd_context_t *ctx, fastd_method_session_state_t *session) {
-	return (session && fastd_method_session_common_is_valid(ctx, &session->common));
+static bool method_session_is_valid(fastd_method_session_state_t *session) {
+	return (session && fastd_method_session_common_is_valid(&session->common));
 }
 
-static bool method_session_is_initiator(fastd_context_t *ctx UNUSED, fastd_method_session_state_t *session) {
+static bool method_session_is_initiator(fastd_method_session_state_t *session) {
 	return fastd_method_session_common_is_initiator(&session->common);
 }
 
-static bool method_session_want_refresh(fastd_context_t *ctx, fastd_method_session_state_t *session) {
-	return fastd_method_session_common_want_refresh(ctx, &session->common);
+static bool method_session_want_refresh(fastd_method_session_state_t *session) {
+	return fastd_method_session_common_want_refresh(&session->common);
 }
 
-static void method_session_superseded(fastd_context_t *ctx, fastd_method_session_state_t *session) {
-	fastd_method_session_common_superseded(ctx, &session->common);
+static void method_session_superseded(fastd_method_session_state_t *session) {
+	fastd_method_session_common_superseded(&session->common);
 }
 
-static void method_session_free(fastd_context_t *ctx UNUSED, fastd_method_session_state_t *session) {
+static void method_session_free(fastd_method_session_state_t *session) {
 	if (session) {
 		session->cipher->free(session->cipher_state);
 		session->gmac_cipher->free(session->gmac_cipher_state);
@@ -183,9 +183,9 @@ static inline void put_size(fastd_block128_t *out, size_t len) {
 	out->b[7] = len << 3;
 }
 
-static bool method_encrypt(fastd_context_t *ctx, fastd_peer_t *peer UNUSED, fastd_method_session_state_t *session, fastd_buffer_t *out, fastd_buffer_t in) {
+static bool method_encrypt(fastd_peer_t *peer UNUSED, fastd_method_session_state_t *session, fastd_buffer_t *out, fastd_buffer_t in) {
 	size_t tail_len = alignto(in.len, sizeof(fastd_block128_t))-in.len;
-	*out = fastd_buffer_alloc(ctx, sizeof(fastd_block128_t)+in.len, alignto(COMMON_HEADBYTES, 16), sizeof(fastd_block128_t)+tail_len);
+	*out = fastd_buffer_alloc(sizeof(fastd_block128_t)+in.len, alignto(COMMON_HEADBYTES, 16), sizeof(fastd_block128_t)+tail_len);
 
 	if (tail_len)
 		memset(in.data+in.len, 0, tail_len);
@@ -226,23 +226,23 @@ static bool method_encrypt(fastd_context_t *ctx, fastd_peer_t *peer UNUSED, fast
 
 	fastd_buffer_free(in);
 
-	fastd_method_put_common_header(ctx, out, session->common.send_nonce, 0);
+	fastd_method_put_common_header(out, session->common.send_nonce, 0);
 	fastd_method_increment_nonce(&session->common);
 
 	return true;
 }
 
-static bool method_decrypt(fastd_context_t *ctx, fastd_peer_t *peer, fastd_method_session_state_t *session, fastd_buffer_t *out, fastd_buffer_t in) {
+static bool method_decrypt(fastd_peer_t *peer, fastd_method_session_state_t *session, fastd_buffer_t *out, fastd_buffer_t in) {
 	if (in.len < COMMON_HEADBYTES+sizeof(fastd_block128_t))
 		return false;
 
-	if (!method_session_is_valid(ctx, session))
+	if (!method_session_is_valid(session))
 		return false;
 
 	uint8_t in_nonce[COMMON_NONCEBYTES];
 	uint8_t flags;
 	int64_t age;
-	if (!fastd_method_handle_common_header(ctx, &session->common, &in, in_nonce, &flags, &age))
+	if (!fastd_method_handle_common_header(&session->common, &in, in_nonce, &flags, &age))
 		return false;
 
 	if (flags)
@@ -255,7 +255,7 @@ static bool method_decrypt(fastd_context_t *ctx, fastd_peer_t *peer, fastd_metho
 	fastd_method_expand_nonce(gmac_nonce, in_nonce, sizeof(gmac_nonce));
 
 	size_t tail_len = alignto(in.len, sizeof(fastd_block128_t))-in.len;
-	*out = fastd_buffer_alloc(ctx, in.len, 0, tail_len);
+	*out = fastd_buffer_alloc(in.len, 0, tail_len);
 
 	int n_blocks = block_count(in.len, sizeof(fastd_block128_t));
 
@@ -282,11 +282,11 @@ static bool method_decrypt(fastd_context_t *ctx, fastd_peer_t *peer, fastd_metho
 		return false;
 	}
 
-	fastd_buffer_push_head(ctx, out, sizeof(fastd_block128_t));
+	fastd_buffer_push_head(out, sizeof(fastd_block128_t));
 
-	if (!fastd_method_reorder_check(ctx, peer, &session->common, in_nonce, age)) {
+	if (!fastd_method_reorder_check(peer, &session->common, in_nonce, age)) {
 		fastd_buffer_free(*out);
-		*out = fastd_buffer_alloc(ctx, 0, 0, 0);
+		*out = fastd_buffer_alloc(0, 0, 0);
 	}
 
 	fastd_buffer_free(in);
diff --git a/src/methods/generic_gmac/generic_gmac.c b/src/methods/generic_gmac/generic_gmac.c
index 88c1880..6b84a95 100644
--- a/src/methods/generic_gmac/generic_gmac.c
+++ b/src/methods/generic_gmac/generic_gmac.c
@@ -89,14 +89,14 @@ static void method_destroy(fastd_method_t *method) {
 	free(method);
 }
 
-static size_t method_key_length(fastd_context_t *ctx UNUSED, const fastd_method_t *method) {
+static size_t method_key_length(const fastd_method_t *method) {
 	return method->cipher_info->key_length;
 }
 
-static fastd_method_session_state_t* method_session_init(fastd_context_t *ctx, const fastd_method_t *method, const uint8_t *secret, bool initiator) {
+static fastd_method_session_state_t* method_session_init(const fastd_method_t *method, const uint8_t *secret, bool initiator) {
 	fastd_method_session_state_t *session = malloc(sizeof(fastd_method_session_state_t));
 
-	fastd_method_common_init(ctx, &session->common, initiator);
+	fastd_method_common_init(&session->common, initiator);
 	session->method = method;
 
 	session->cipher = fastd_cipher_get(method->cipher_info);
@@ -121,23 +121,23 @@ static fastd_method_session_state_t* method_session_init(fastd_context_t *ctx, c
 	return session;
 }
 
-static bool method_session_is_valid(fastd_context_t *ctx, fastd_method_session_state_t *session) {
-	return (session && fastd_method_session_common_is_valid(ctx, &session->common));
+static bool method_session_is_valid(fastd_method_session_state_t *session) {
+	return (session && fastd_method_session_common_is_valid(&session->common));
 }
 
-static bool method_session_is_initiator(fastd_context_t *ctx UNUSED, fastd_method_session_state_t *session) {
+static bool method_session_is_initiator(fastd_method_session_state_t *session) {
 	return fastd_method_session_common_is_initiator(&session->common);
 }
 
-static bool method_session_want_refresh(fastd_context_t *ctx, fastd_method_session_state_t *session) {
-	return fastd_method_session_common_want_refresh(ctx, &session->common);
+static bool method_session_want_refresh(fastd_method_session_state_t *session) {
+	return fastd_method_session_common_want_refresh(&session->common);
 }
 
-static void method_session_superseded(fastd_context_t *ctx, fastd_method_session_state_t *session) {
-	fastd_method_session_common_superseded(ctx, &session->common);
+static void method_session_superseded(fastd_method_session_state_t *session) {
+	fastd_method_session_common_superseded(&session->common);
 }
 
-static void method_session_free(fastd_context_t *ctx UNUSED, fastd_method_session_state_t *session) {
+static void method_session_free(fastd_method_session_state_t *session) {
 	if (session) {
 		session->cipher->free(session->cipher_state);
 		session->ghash->free(session->ghash_state);
@@ -155,11 +155,11 @@ static inline void put_size(fastd_block128_t *out, size_t len) {
 	out->b[15] = len << 3;
 }
 
-static bool method_encrypt(fastd_context_t *ctx, fastd_peer_t *peer UNUSED, fastd_method_session_state_t *session, fastd_buffer_t *out, fastd_buffer_t in) {
-	fastd_buffer_pull_head_zero(ctx, &in, sizeof(fastd_block128_t));
+static bool method_encrypt(fastd_peer_t *peer UNUSED, fastd_method_session_state_t *session, fastd_buffer_t *out, fastd_buffer_t in) {
+	fastd_buffer_pull_head_zero(&in, sizeof(fastd_block128_t));
 
 	size_t tail_len = alignto(in.len, sizeof(fastd_block128_t))-in.len;
-	*out = fastd_buffer_alloc(ctx, in.len, alignto(COMMON_HEADBYTES, 16), sizeof(fastd_block128_t)+tail_len);
+	*out = fastd_buffer_alloc(in.len, alignto(COMMON_HEADBYTES, 16), sizeof(fastd_block128_t)+tail_len);
 
 	if (tail_len)
 		memset(in.data+in.len, 0, tail_len);
@@ -193,23 +193,23 @@ static bool method_encrypt(fastd_context_t *ctx, fastd_peer_t *peer UNUSED, fast
 
 	fastd_buffer_free(in);
 
-	fastd_method_put_common_header(ctx, out, session->common.send_nonce, 0);
+	fastd_method_put_common_header(out, session->common.send_nonce, 0);
 	fastd_method_increment_nonce(&session->common);
 
 	return true;
 }
 
-static bool method_decrypt(fastd_context_t *ctx, fastd_peer_t *peer, fastd_method_session_state_t *session, fastd_buffer_t *out, fastd_buffer_t in) {
+static bool method_decrypt(fastd_peer_t *peer, fastd_method_session_state_t *session, fastd_buffer_t *out, fastd_buffer_t in) {
 	if (in.len < COMMON_HEADBYTES+sizeof(fastd_block128_t))
 		return false;
 
-	if (!method_session_is_valid(ctx, session))
+	if (!method_session_is_valid(session))
 		return false;
 
 	uint8_t in_nonce[COMMON_NONCEBYTES];
 	uint8_t flags;
 	int64_t age;
-	if (!fastd_method_handle_common_header(ctx, &session->common, &in, in_nonce, &flags, &age))
+	if (!fastd_method_handle_common_header(&session->common, &in, in_nonce, &flags, &age))
 		return false;
 
 	if (flags)
@@ -219,7 +219,7 @@ static bool method_decrypt(fastd_context_t *ctx, fastd_peer_t *peer, fastd_metho
 	fastd_method_expand_nonce(nonce, in_nonce, sizeof(nonce));
 
 	size_t tail_len = alignto(in.len, sizeof(fastd_block128_t))-in.len;
-	*out = fastd_buffer_alloc(ctx, in.len, 0, tail_len);
+	*out = fastd_buffer_alloc(in.len, 0, tail_len);
 
 	int n_blocks = block_count(in.len, sizeof(fastd_block128_t));
 
@@ -245,11 +245,11 @@ static bool method_decrypt(fastd_context_t *ctx, fastd_peer_t *peer, fastd_metho
 
 	fastd_buffer_free(in);
 
-	fastd_buffer_push_head(ctx, out, sizeof(fastd_block128_t));
+	fastd_buffer_push_head(out, sizeof(fastd_block128_t));
 
-	if (!fastd_method_reorder_check(ctx, peer, &session->common, in_nonce, age)) {
+	if (!fastd_method_reorder_check(peer, &session->common, in_nonce, age)) {
 		fastd_buffer_free(*out);
-		*out = fastd_buffer_alloc(ctx, 0, 0, 0);
+		*out = fastd_buffer_alloc(0, 0, 0);
 	}
 
 	return true;
diff --git a/src/methods/generic_poly1305/generic_poly1305.c b/src/methods/generic_poly1305/generic_poly1305.c
index a8eb3d1..0e2641c 100644
--- a/src/methods/generic_poly1305/generic_poly1305.c
+++ b/src/methods/generic_poly1305/generic_poly1305.c
@@ -79,14 +79,14 @@ static void method_destroy(fastd_method_t *method) {
 	free(method);
 }
 
-static size_t method_key_length(fastd_context_t *ctx UNUSED, const fastd_method_t *method) {
+static size_t method_key_length(const fastd_method_t *method) {
 	return method->cipher_info->key_length;
 }
 
-static fastd_method_session_state_t* method_session_init(fastd_context_t *ctx, const fastd_method_t *method, const uint8_t *secret, bool initiator) {
+static fastd_method_session_state_t* method_session_init(const fastd_method_t *method, const uint8_t *secret, bool initiator) {
 	fastd_method_session_state_t *session = malloc(sizeof(fastd_method_session_state_t));
 
-	fastd_method_common_init(ctx, &session->common, initiator);
+	fastd_method_common_init(&session->common, initiator);
 	session->method = method;
 	session->cipher = fastd_cipher_get(session->method->cipher_info);
 	session->cipher_state = session->cipher->init(secret);
@@ -94,34 +94,34 @@ static fastd_method_session_state_t* method_session_init(fastd_context_t *ctx, c
 	return session;
 }
 
-static bool method_session_is_valid(fastd_context_t *ctx, fastd_method_session_state_t *session) {
-	return (session && fastd_method_session_common_is_valid(ctx, &session->common));
+static bool method_session_is_valid(fastd_method_session_state_t *session) {
+	return (session && fastd_method_session_common_is_valid(&session->common));
 }
 
-static bool method_session_is_initiator(fastd_context_t *ctx UNUSED, fastd_method_session_state_t *session) {
+static bool method_session_is_initiator(fastd_method_session_state_t *session) {
 	return fastd_method_session_common_is_initiator(&session->common);
 }
 
-static bool method_session_want_refresh(fastd_context_t *ctx, fastd_method_session_state_t *session) {
-	return fastd_method_session_common_want_refresh(ctx, &session->common);
+static bool method_session_want_refresh(fastd_method_session_state_t *session) {
+	return fastd_method_session_common_want_refresh(&session->common);
 }
 
-static void method_session_superseded(fastd_context_t *ctx, fastd_method_session_state_t *session) {
-	fastd_method_session_common_superseded(ctx, &session->common);
+static void method_session_superseded(fastd_method_session_state_t *session) {
+	fastd_method_session_common_superseded(&session->common);
 }
 
-static void method_session_free(fastd_context_t *ctx UNUSED, fastd_method_session_state_t *session) {
+static void method_session_free(fastd_method_session_state_t *session) {
 	if (session) {
 		session->cipher->free(session->cipher_state);
 		free(session);
 	}
 }
 
-static bool method_encrypt(fastd_context_t *ctx, fastd_peer_t *peer UNUSED, fastd_method_session_state_t *session, fastd_buffer_t *out, fastd_buffer_t in) {
-	fastd_buffer_pull_head_zero(ctx, &in, KEYBYTES);
+static bool method_encrypt(fastd_peer_t *peer UNUSED, fastd_method_session_state_t *session, fastd_buffer_t *out, fastd_buffer_t in) {
+	fastd_buffer_pull_head_zero(&in, KEYBYTES);
 
 	size_t tail_len = alignto(in.len, sizeof(fastd_block128_t))-in.len;
-	*out = fastd_buffer_alloc(ctx, in.len, alignto(COMMON_HEADBYTES, 16), sizeof(fastd_block128_t)+tail_len);
+	*out = fastd_buffer_alloc(in.len, alignto(COMMON_HEADBYTES, 16), sizeof(fastd_block128_t)+tail_len);
 
 	if (tail_len)
 		memset(in.data+in.len, 0, tail_len);
@@ -144,28 +144,28 @@ static bool method_encrypt(fastd_context_t *ctx, fastd_peer_t *peer UNUSED, fast
 
 	crypto_onetimeauth_poly1305(tag, outblocks->b+KEYBYTES, in.len - KEYBYTES, outblocks->b);
 
-	fastd_buffer_push_head(ctx, out, KEYBYTES);
-	fastd_buffer_pull_head_from(ctx, out, tag, TAGBYTES);
+	fastd_buffer_push_head(out, KEYBYTES);
+	fastd_buffer_pull_head_from(out, tag, TAGBYTES);
 
 	fastd_buffer_free(in);
 
-	fastd_method_put_common_header(ctx, out, session->common.send_nonce, 0);
+	fastd_method_put_common_header(out, session->common.send_nonce, 0);
 	fastd_method_increment_nonce(&session->common);
 
 	return true;
 }
 
-static bool method_decrypt(fastd_context_t *ctx, fastd_peer_t *peer, fastd_method_session_state_t *session, fastd_buffer_t *out, fastd_buffer_t in) {
+static bool method_decrypt(fastd_peer_t *peer, fastd_method_session_state_t *session, fastd_buffer_t *out, fastd_buffer_t in) {
 	if (in.len < COMMON_HEADBYTES+TAGBYTES)
 		return false;
 
-	if (!method_session_is_valid(ctx, session))
+	if (!method_session_is_valid(session))
 		return false;
 
 	uint8_t in_nonce[COMMON_NONCEBYTES];
 	uint8_t flags;
 	int64_t age;
-	if (!fastd_method_handle_common_header(ctx, &session->common, &in, in_nonce, &flags, &age))
+	if (!fastd_method_handle_common_header(&session->common, &in, in_nonce, &flags, &age))
 		return false;
 
 	if (flags)
@@ -175,11 +175,11 @@ static bool method_decrypt(fastd_context_t *ctx, fastd_peer_t *peer, fastd_metho
 	fastd_method_expand_nonce(nonce, in_nonce, sizeof(nonce));
 
 	uint8_t tag[TAGBYTES] __attribute__((aligned(8)));
-	fastd_buffer_push_head_to(ctx, &in, tag, TAGBYTES);
-	fastd_buffer_pull_head_zero(ctx, &in, KEYBYTES);
+	fastd_buffer_push_head_to(&in, tag, TAGBYTES);
+	fastd_buffer_pull_head_zero(&in, KEYBYTES);
 
 	size_t tail_len = alignto(in.len, sizeof(fastd_block128_t))-in.len;
-	*out = fastd_buffer_alloc(ctx, in.len, 0, tail_len);
+	*out = fastd_buffer_alloc(in.len, 0, tail_len);
 
 	int n_blocks = block_count(in.len, sizeof(fastd_block128_t));
 	fastd_block128_t *inblocks = in.data;
@@ -198,20 +198,20 @@ static bool method_decrypt(fastd_context_t *ctx, fastd_peer_t *peer, fastd_metho
 		fastd_buffer_free(*out);
 
 		/* restore input buffer */
-		fastd_buffer_push_head(ctx, &in, KEYBYTES);
-		fastd_buffer_pull_head_from(ctx, &in, tag, TAGBYTES);
-		fastd_method_put_common_header(ctx, &in, in_nonce, 0);
+		fastd_buffer_push_head(&in, KEYBYTES);
+		fastd_buffer_pull_head_from(&in, tag, TAGBYTES);
+		fastd_method_put_common_header(&in, in_nonce, 0);
 
 		return false;
 	}
 
 	fastd_buffer_free(in);
 
-	fastd_buffer_push_head(ctx, out, KEYBYTES);
+	fastd_buffer_push_head(out, KEYBYTES);
 
-	if (!fastd_method_reorder_check(ctx, peer, &session->common, in_nonce, age)) {
+	if (!fastd_method_reorder_check(peer, &session->common, in_nonce, age)) {
 		fastd_buffer_free(*out);
-		*out = fastd_buffer_alloc(ctx, 0, 0, 0);
+		*out = fastd_buffer_alloc(0, 0, 0);
 	}
 
 	return true;
diff --git a/src/methods/null/null.c b/src/methods/null/null.c
index 9c7dc43..76fd961 100644
--- a/src/methods/null/null.c
+++ b/src/methods/null/null.c
@@ -40,11 +40,11 @@ static bool method_create_by_name(const char *name, fastd_method_t **method UNUS
 static void method_destroy(fastd_method_t *method UNUSED) {
 }
 
-static size_t method_key_length(fastd_context_t *ctx UNUSED, const fastd_method_t *method UNUSED) {
+static size_t method_key_length(const fastd_method_t *method UNUSED) {
 	return 0;
 }
 
-static fastd_method_session_state_t* method_session_init(fastd_context_t *ctx UNUSED, const fastd_method_t *method UNUSED, const uint8_t *secret UNUSED, bool initiator) {
+static fastd_method_session_state_t* method_session_init(const fastd_method_t *method UNUSED, const uint8_t *secret UNUSED, bool initiator) {
 	fastd_method_session_state_t *session = malloc(sizeof(fastd_method_session_state_t));
 
 	session->valid = true;
@@ -53,31 +53,31 @@ static fastd_method_session_state_t* method_session_init(fastd_context_t *ctx UN
 	return session;
 }
 
-static fastd_method_session_state_t* method_session_init_compat(fastd_context_t *ctx, const fastd_method_t *method, const uint8_t *secret, size_t length UNUSED, bool initiator) {
-	return method_session_init(ctx, method, secret, initiator);
+static fastd_method_session_state_t* method_session_init_compat(const fastd_method_t *method, const uint8_t *secret, size_t length UNUSED, bool initiator) {
+	return method_session_init(method, secret, initiator);
 }
 
-static bool method_session_is_valid(fastd_context_t *ctx UNUSED, fastd_method_session_state_t *session) {
+static bool method_session_is_valid(fastd_method_session_state_t *session) {
 	return (session && session->valid);
 }
 
-static bool method_session_is_initiator(fastd_context_t *ctx UNUSED, fastd_method_session_state_t *session) {
+static bool method_session_is_initiator(fastd_method_session_state_t *session) {
 	return (session->initiator);
 }
 
-static bool method_session_want_refresh(fastd_context_t *ctx UNUSED, fastd_method_session_state_t *session UNUSED) {
+static bool method_session_want_refresh(fastd_method_session_state_t *session UNUSED) {
 	return false;
 }
 
-static void method_session_superseded(fastd_context_t *ctx UNUSED, fastd_method_session_state_t *session) {
+static void method_session_superseded(fastd_method_session_state_t *session) {
 	session->valid = false;
 }
 
-static void method_session_free(fastd_context_t *ctx UNUSED, fastd_method_session_state_t *session) {
+static void method_session_free(fastd_method_session_state_t *session) {
 	free(session);
 }
 
-static bool method_passthrough(fastd_context_t *ctx UNUSED, fastd_peer_t *peer UNUSED, fastd_method_session_state_t *session UNUSED, fastd_buffer_t *out, fastd_buffer_t in) {
+static bool method_passthrough(fastd_peer_t *peer UNUSED, fastd_method_session_state_t *session UNUSED, fastd_buffer_t *out, fastd_buffer_t in) {
 	*out = in;
 	return true;
 }
diff --git a/src/methods/xsalsa20_poly1305/xsalsa20_poly1305.c b/src/methods/xsalsa20_poly1305/xsalsa20_poly1305.c
index e11826f..f06e0f8 100644
--- a/src/methods/xsalsa20_poly1305/xsalsa20_poly1305.c
+++ b/src/methods/xsalsa20_poly1305/xsalsa20_poly1305.c
@@ -45,44 +45,44 @@ static bool method_create_by_name(const char *name, fastd_method_t **method UNUS
 static void method_destroy(fastd_method_t *method UNUSED) {
 }
 
-static size_t method_key_length(fastd_context_t *ctx UNUSED, const fastd_method_t *method UNUSED) {
+static size_t method_key_length(const fastd_method_t *method UNUSED) {
 	return crypto_secretbox_xsalsa20poly1305_KEYBYTES;
 }
 
-static fastd_method_session_state_t* method_session_init(fastd_context_t *ctx, const fastd_method_t *method UNUSED, const uint8_t *secret, bool initiator) {
+static fastd_method_session_state_t* method_session_init(const fastd_method_t *method UNUSED, const uint8_t *secret, bool initiator) {
 	fastd_method_session_state_t *session = malloc(sizeof(fastd_method_session_state_t));
 
-	fastd_method_common_init(ctx, &session->common, initiator);
+	fastd_method_common_init(&session->common, initiator);
 
 	memcpy(session->key, secret, crypto_secretbox_xsalsa20poly1305_KEYBYTES);
 
 	return session;
 }
 
-static fastd_method_session_state_t* method_session_init_compat(fastd_context_t *ctx, const fastd_method_t *method, const uint8_t *secret, size_t length, bool initiator) {
+static fastd_method_session_state_t* method_session_init_compat(const fastd_method_t *method, const uint8_t *secret, size_t length, bool initiator) {
 	if (length < crypto_secretbox_xsalsa20poly1305_KEYBYTES)
-		exit_bug(ctx, "xsalsa20-poly1305: tried to init with short secret");
+		exit_bug("xsalsa20-poly1305: tried to init with short secret");
 
-	return method_session_init(ctx, method, secret, initiator);
+	return method_session_init(method, secret, initiator);
 }
 
-static bool method_session_is_valid(fastd_context_t *ctx, fastd_method_session_state_t *session) {
-	return (session && fastd_method_session_common_is_valid(ctx, &session->common));
+static bool method_session_is_valid(fastd_method_session_state_t *session) {
+	return (session && fastd_method_session_common_is_valid(&session->common));
 }
 
-static bool method_session_is_initiator(fastd_context_t *ctx UNUSED, fastd_method_session_state_t *session) {
+static bool method_session_is_initiator(fastd_method_session_state_t *session) {
 	return fastd_method_session_common_is_initiator(&session->common);
 }
 
-static bool method_session_want_refresh(fastd_context_t *ctx, fastd_method_session_state_t *session) {
-	return fastd_method_session_common_want_refresh(ctx, &session->common);
+static bool method_session_want_refresh(fastd_method_session_state_t *session) {
+	return fastd_method_session_common_want_refresh(&session->common);
 }
 
-static void method_session_superseded(fastd_context_t *ctx, fastd_method_session_state_t *session) {
-	fastd_method_session_common_superseded(ctx, &session->common);
+static void method_session_superseded(fastd_method_session_state_t *session) {
+	fastd_method_session_common_superseded(&session->common);
 }
 
-static void method_session_free(fastd_context_t *ctx UNUSED, fastd_method_session_state_t *session) {
+static void method_session_free(fastd_method_session_state_t *session) {
 	if(session) {
 		secure_memzero(session, sizeof(fastd_method_session_state_t));
 		free(session);
@@ -96,30 +96,30 @@ static inline void memcpy_nonce(uint8_t *dst, const uint8_t *src) {
 		dst[i] = src[COMMON_NONCEBYTES-i-1];
 }
 
-static inline void put_header(fastd_context_t *ctx, fastd_buffer_t *buffer, const uint8_t nonce[COMMON_NONCEBYTES], uint8_t flags) {
-	fastd_buffer_pull_head_from(ctx, buffer, &flags, 1);
+static inline void put_header(fastd_buffer_t *buffer, const uint8_t nonce[COMMON_NONCEBYTES], uint8_t flags) {
+	fastd_buffer_pull_head_from(buffer, &flags, 1);
 
-	fastd_buffer_pull_head(ctx, buffer, COMMON_NONCEBYTES);
+	fastd_buffer_pull_head(buffer, COMMON_NONCEBYTES);
 	memcpy_nonce(buffer->data, nonce);
 }
 
-static inline void take_header(fastd_context_t *ctx, fastd_buffer_t *buffer, uint8_t nonce[COMMON_NONCEBYTES], uint8_t *flags) {
+static inline void take_header(fastd_buffer_t *buffer, uint8_t nonce[COMMON_NONCEBYTES], uint8_t *flags) {
 	memcpy_nonce(nonce, buffer->data  );
-	fastd_buffer_push_head(ctx, buffer, COMMON_NONCEBYTES);
+	fastd_buffer_push_head(buffer, COMMON_NONCEBYTES);
 
-	fastd_buffer_push_head_to(ctx, buffer, flags, 1);
+	fastd_buffer_push_head_to(buffer, flags, 1);
 }
 
-static inline bool handle_header(fastd_context_t *ctx, const fastd_method_common_t *session, fastd_buffer_t *buffer, uint8_t nonce[COMMON_NONCEBYTES], uint8_t *flags, int64_t *age) {
-	take_header(ctx, buffer, nonce, flags);
-	return fastd_method_is_nonce_valid(ctx, session, nonce, age);
+static inline bool handle_header(const fastd_method_common_t *session, fastd_buffer_t *buffer, uint8_t nonce[COMMON_NONCEBYTES], uint8_t *flags, int64_t *age) {
+	take_header(buffer, nonce, flags);
+	return fastd_method_is_nonce_valid(session, nonce, age);
 }
 
 
-static bool method_encrypt(fastd_context_t *ctx, fastd_peer_t *peer UNUSED, fastd_method_session_state_t *session, fastd_buffer_t *out, fastd_buffer_t in) {
-	fastd_buffer_pull_head_zero(ctx, &in, crypto_secretbox_xsalsa20poly1305_ZEROBYTES);
+static bool method_encrypt(fastd_peer_t *peer UNUSED, fastd_method_session_state_t *session, fastd_buffer_t *out, fastd_buffer_t in) {
+	fastd_buffer_pull_head_zero(&in, crypto_secretbox_xsalsa20poly1305_ZEROBYTES);
 
-	*out = fastd_buffer_alloc(ctx, in.len, 0, 0);
+	*out = fastd_buffer_alloc(in.len, 0, 0);
 
 	uint8_t nonce[crypto_secretbox_xsalsa20poly1305_NONCEBYTES] __attribute__((aligned(8))) = {};
 	memcpy_nonce(nonce, session->common.send_nonce);
@@ -128,24 +128,24 @@ static bool method_encrypt(fastd_context_t *ctx, fastd_peer_t *peer UNUSED, fast
 
 	fastd_buffer_free(in);
 
-	fastd_buffer_push_head(ctx, out, crypto_secretbox_xsalsa20poly1305_BOXZEROBYTES);
-	put_header(ctx, out, session->common.send_nonce, 0);
+	fastd_buffer_push_head(out, crypto_secretbox_xsalsa20poly1305_BOXZEROBYTES);
+	put_header(out, session->common.send_nonce, 0);
 	fastd_method_increment_nonce(&session->common);
 
 	return true;
 }
 
-static bool method_decrypt(fastd_context_t *ctx, fastd_peer_t *peer, fastd_method_session_state_t *session, fastd_buffer_t *out, fastd_buffer_t in) {
+static bool method_decrypt(fastd_peer_t *peer, fastd_method_session_state_t *session, fastd_buffer_t *out, fastd_buffer_t in) {
 	if (in.len < COMMON_HEADBYTES)
 		return false;
 
-	if (!method_session_is_valid(ctx, session))
+	if (!method_session_is_valid(session))
 		return false;
 
 	uint8_t in_nonce[COMMON_NONCEBYTES];
 	uint8_t flags;
 	int64_t age;
-	if (!handle_header(ctx, &session->common, &in, in_nonce, &flags, &age))
+	if (!handle_header(&session->common, &in, in_nonce, &flags, &age))
 		return false;
 
 	if (flags)
@@ -154,27 +154,27 @@ static bool method_decrypt(fastd_context_t *ctx, fastd_peer_t *peer, fastd_metho
 	uint8_t nonce[crypto_secretbox_xsalsa20poly1305_NONCEBYTES] __attribute__((aligned(8))) = {};
 	memcpy_nonce(nonce, in_nonce);
 
-	fastd_buffer_pull_head_zero(ctx, &in, crypto_secretbox_xsalsa20poly1305_BOXZEROBYTES);
+	fastd_buffer_pull_head_zero(&in, crypto_secretbox_xsalsa20poly1305_BOXZEROBYTES);
 
-	*out = fastd_buffer_alloc(ctx, in.len, 0, 0);
+	*out = fastd_buffer_alloc(in.len, 0, 0);
 
 	if (crypto_secretbox_xsalsa20poly1305_open(out->data, in.data, in.len, nonce, session->key) != 0) {
 		fastd_buffer_free(*out);
 
 		/* restore input buffer */
-		fastd_buffer_push_head(ctx, &in, crypto_secretbox_xsalsa20poly1305_BOXZEROBYTES);
-		put_header(ctx, &in, in_nonce, 0);
+		fastd_buffer_push_head(&in, crypto_secretbox_xsalsa20poly1305_BOXZEROBYTES);
+		put_header(&in, in_nonce, 0);
 		return false;
 	}
 
 	fastd_buffer_free(in);
 
-	if (!fastd_method_reorder_check(ctx, peer, &session->common, in_nonce, age)) {
+	if (!fastd_method_reorder_check(peer, &session->common, in_nonce, age)) {
 		fastd_buffer_free(*out);
-		*out = fastd_buffer_alloc(ctx, crypto_secretbox_xsalsa20poly1305_ZEROBYTES, 0, 0);
+		*out = fastd_buffer_alloc(crypto_secretbox_xsalsa20poly1305_ZEROBYTES, 0, 0);
 	}
 
-	fastd_buffer_push_head(ctx, out, crypto_secretbox_xsalsa20poly1305_ZEROBYTES);
+	fastd_buffer_push_head(out, crypto_secretbox_xsalsa20poly1305_ZEROBYTES);
 
 	return true;
 }