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-rw-r--r--include/net/tls.h19
-rw-r--r--net/tls/tls_main.c96
-rw-r--r--net/tls/tls_sw.c24
3 files changed, 79 insertions, 60 deletions
diff --git a/include/net/tls.h b/include/net/tls.h
index b89d397dd62f..70becd0a9299 100644
--- a/include/net/tls.h
+++ b/include/net/tls.h
@@ -83,6 +83,8 @@ struct tls_context {
void *priv_ctx;
+ u8 tx_conf:2;
+
u16 prepend_size;
u16 tag_size;
u16 overhead_size;
@@ -97,7 +99,6 @@ struct tls_context {
u16 pending_open_record_frags;
int (*push_pending_record)(struct sock *sk, int flags);
- void (*free_resources)(struct sock *sk);
void (*sk_write_space)(struct sock *sk);
void (*sk_proto_close)(struct sock *sk, long timeout);
@@ -122,6 +123,7 @@ int tls_sw_sendmsg(struct sock *sk, struct msghdr *msg, size_t size);
int tls_sw_sendpage(struct sock *sk, struct page *page,
int offset, size_t size, int flags);
void tls_sw_close(struct sock *sk, long timeout);
+void tls_sw_free_tx_resources(struct sock *sk);
void tls_sk_destruct(struct sock *sk, struct tls_context *ctx);
void tls_icsk_clean_acked(struct sock *sk);
@@ -212,6 +214,21 @@ static inline void tls_fill_prepend(struct tls_context *ctx,
ctx->iv + TLS_CIPHER_AES_GCM_128_SALT_SIZE, iv_size);
}
+static inline void tls_make_aad(char *buf,
+ size_t size,
+ char *record_sequence,
+ int record_sequence_size,
+ unsigned char record_type)
+{
+ memcpy(buf, record_sequence, record_sequence_size);
+
+ buf[8] = record_type;
+ buf[9] = TLS_1_2_VERSION_MAJOR;
+ buf[10] = TLS_1_2_VERSION_MINOR;
+ buf[11] = size >> 8;
+ buf[12] = size & 0xFF;
+}
+
static inline struct tls_context *tls_get_ctx(const struct sock *sk)
{
struct inet_connection_sock *icsk = inet_csk(sk);
diff --git a/net/tls/tls_main.c b/net/tls/tls_main.c
index 60aff60e30ad..e07ee3ae0023 100644
--- a/net/tls/tls_main.c
+++ b/net/tls/tls_main.c
@@ -45,8 +45,18 @@ MODULE_AUTHOR("Mellanox Technologies");
MODULE_DESCRIPTION("Transport Layer Security Support");
MODULE_LICENSE("Dual BSD/GPL");
-static struct proto tls_base_prot;
-static struct proto tls_sw_prot;
+enum {
+ TLS_BASE_TX,
+ TLS_SW_TX,
+ TLS_NUM_CONFIG,
+};
+
+static struct proto tls_prots[TLS_NUM_CONFIG];
+
+static inline void update_sk_prot(struct sock *sk, struct tls_context *ctx)
+{
+ sk->sk_prot = &tls_prots[ctx->tx_conf];
+}
int wait_on_pending_writer(struct sock *sk, long *timeo)
{
@@ -216,6 +226,12 @@ static void tls_sk_proto_close(struct sock *sk, long timeout)
void (*sk_proto_close)(struct sock *sk, long timeout);
lock_sock(sk);
+ sk_proto_close = ctx->sk_proto_close;
+
+ if (ctx->tx_conf == TLS_BASE_TX) {
+ kfree(ctx);
+ goto skip_tx_cleanup;
+ }
if (!tls_complete_pending_work(sk, ctx, 0, &timeo))
tls_handle_open_record(sk, 0);
@@ -232,13 +248,14 @@ static void tls_sk_proto_close(struct sock *sk, long timeout)
sg++;
}
}
- ctx->free_resources(sk);
+
kfree(ctx->rec_seq);
kfree(ctx->iv);
- sk_proto_close = ctx->sk_proto_close;
- kfree(ctx);
+ if (ctx->tx_conf == TLS_SW_TX)
+ tls_sw_free_tx_resources(sk);
+skip_tx_cleanup:
release_sock(sk);
sk_proto_close(sk, timeout);
}
@@ -338,46 +355,41 @@ static int tls_getsockopt(struct sock *sk, int level, int optname,
static int do_tls_setsockopt_tx(struct sock *sk, char __user *optval,
unsigned int optlen)
{
- struct tls_crypto_info *crypto_info, tmp_crypto_info;
+ struct tls_crypto_info *crypto_info;
struct tls_context *ctx = tls_get_ctx(sk);
- struct proto *prot = NULL;
int rc = 0;
+ int tx_conf;
if (!optval || (optlen < sizeof(*crypto_info))) {
rc = -EINVAL;
goto out;
}
- rc = copy_from_user(&tmp_crypto_info, optval, sizeof(*crypto_info));
+ crypto_info = &ctx->crypto_send;
+ /* Currently we don't support set crypto info more than one time */
+ if (TLS_CRYPTO_INFO_READY(crypto_info))
+ goto out;
+
+ rc = copy_from_user(crypto_info, optval, sizeof(*crypto_info));
if (rc) {
rc = -EFAULT;
goto out;
}
/* check version */
- if (tmp_crypto_info.version != TLS_1_2_VERSION) {
+ if (crypto_info->version != TLS_1_2_VERSION) {
rc = -ENOTSUPP;
- goto out;
+ goto err_crypto_info;
}
- /* get user crypto info */
- crypto_info = &ctx->crypto_send;
-
- /* Currently we don't support set crypto info more than one time */
- if (TLS_CRYPTO_INFO_READY(crypto_info))
- goto out;
-
- switch (tmp_crypto_info.cipher_type) {
+ switch (crypto_info->cipher_type) {
case TLS_CIPHER_AES_GCM_128: {
if (optlen != sizeof(struct tls12_crypto_info_aes_gcm_128)) {
rc = -EINVAL;
goto out;
}
- rc = copy_from_user(
- crypto_info,
- optval,
- sizeof(struct tls12_crypto_info_aes_gcm_128));
-
+ rc = copy_from_user(crypto_info + 1, optval + sizeof(*crypto_info),
+ optlen - sizeof(*crypto_info));
if (rc) {
rc = -EFAULT;
goto err_crypto_info;
@@ -389,18 +401,16 @@ static int do_tls_setsockopt_tx(struct sock *sk, char __user *optval,
goto out;
}
- ctx->sk_write_space = sk->sk_write_space;
- sk->sk_write_space = tls_write_space;
-
- ctx->sk_proto_close = sk->sk_prot->close;
-
/* currently SW is default, we will have ethtool in future */
rc = tls_set_sw_offload(sk, ctx);
- prot = &tls_sw_prot;
+ tx_conf = TLS_SW_TX;
if (rc)
goto err_crypto_info;
- sk->sk_prot = prot;
+ ctx->tx_conf = tx_conf;
+ update_sk_prot(sk, ctx);
+ ctx->sk_write_space = sk->sk_write_space;
+ sk->sk_write_space = tls_write_space;
goto out;
err_crypto_info:
@@ -453,7 +463,10 @@ static int tls_init(struct sock *sk)
icsk->icsk_ulp_data = ctx;
ctx->setsockopt = sk->sk_prot->setsockopt;
ctx->getsockopt = sk->sk_prot->getsockopt;
- sk->sk_prot = &tls_base_prot;
+ ctx->sk_proto_close = sk->sk_prot->close;
+
+ ctx->tx_conf = TLS_BASE_TX;
+ update_sk_prot(sk, ctx);
out:
return rc;
}
@@ -464,16 +477,21 @@ static struct tcp_ulp_ops tcp_tls_ulp_ops __read_mostly = {
.init = tls_init,
};
+static void build_protos(struct proto *prot, struct proto *base)
+{
+ prot[TLS_BASE_TX] = *base;
+ prot[TLS_BASE_TX].setsockopt = tls_setsockopt;
+ prot[TLS_BASE_TX].getsockopt = tls_getsockopt;
+ prot[TLS_BASE_TX].close = tls_sk_proto_close;
+
+ prot[TLS_SW_TX] = prot[TLS_BASE_TX];
+ prot[TLS_SW_TX].sendmsg = tls_sw_sendmsg;
+ prot[TLS_SW_TX].sendpage = tls_sw_sendpage;
+}
+
static int __init tls_register(void)
{
- tls_base_prot = tcp_prot;
- tls_base_prot.setsockopt = tls_setsockopt;
- tls_base_prot.getsockopt = tls_getsockopt;
-
- tls_sw_prot = tls_base_prot;
- tls_sw_prot.sendmsg = tls_sw_sendmsg;
- tls_sw_prot.sendpage = tls_sw_sendpage;
- tls_sw_prot.close = tls_sk_proto_close;
+ build_protos(tls_prots, &tcp_prot);
tcp_register_ulp(&tcp_tls_ulp_ops);
diff --git a/net/tls/tls_sw.c b/net/tls/tls_sw.c
index 7d80040a37b6..73d19210dd49 100644
--- a/net/tls/tls_sw.c
+++ b/net/tls/tls_sw.c
@@ -39,22 +39,6 @@
#include <net/tls.h>
-static inline void tls_make_aad(int recv,
- char *buf,
- size_t size,
- char *record_sequence,
- int record_sequence_size,
- unsigned char record_type)
-{
- memcpy(buf, record_sequence, record_sequence_size);
-
- buf[8] = record_type;
- buf[9] = TLS_1_2_VERSION_MAJOR;
- buf[10] = TLS_1_2_VERSION_MINOR;
- buf[11] = size >> 8;
- buf[12] = size & 0xFF;
-}
-
static void trim_sg(struct sock *sk, struct scatterlist *sg,
int *sg_num_elem, unsigned int *sg_size, int target_size)
{
@@ -219,7 +203,7 @@ static int tls_do_encryption(struct tls_context *tls_ctx,
struct aead_request *aead_req;
int rc;
- aead_req = kmalloc(req_size, flags);
+ aead_req = kzalloc(req_size, flags);
if (!aead_req)
return -ENOMEM;
@@ -249,7 +233,7 @@ static int tls_push_record(struct sock *sk, int flags,
sg_mark_end(ctx->sg_plaintext_data + ctx->sg_plaintext_num_elem - 1);
sg_mark_end(ctx->sg_encrypted_data + ctx->sg_encrypted_num_elem - 1);
- tls_make_aad(0, ctx->aad_space, ctx->sg_plaintext_size,
+ tls_make_aad(ctx->aad_space, ctx->sg_plaintext_size,
tls_ctx->rec_seq, tls_ctx->rec_seq_size,
record_type);
@@ -639,7 +623,7 @@ sendpage_end:
return ret;
}
-static void tls_sw_free_resources(struct sock *sk)
+void tls_sw_free_tx_resources(struct sock *sk)
{
struct tls_context *tls_ctx = tls_get_ctx(sk);
struct tls_sw_context *ctx = tls_sw_ctx(tls_ctx);
@@ -650,6 +634,7 @@ static void tls_sw_free_resources(struct sock *sk)
tls_free_both_sg(sk);
kfree(ctx);
+ kfree(tls_ctx);
}
int tls_set_sw_offload(struct sock *sk, struct tls_context *ctx)
@@ -679,7 +664,6 @@ int tls_set_sw_offload(struct sock *sk, struct tls_context *ctx)
}
ctx->priv_ctx = (struct tls_offload_context *)sw_ctx;
- ctx->free_resources = tls_sw_free_resources;
crypto_info = &ctx->crypto_send;
switch (crypto_info->cipher_type) {
generated by cgit (git 2.34.1) at 2024-06-11 10:06:54 +0000