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authorDavid S. Miller <davem@davemloft.net>2020-01-19 22:10:04 +0100
committerDavid S. Miller <davem@davemloft.net>2020-01-19 22:10:04 +0100
commitb3f7e3f23a763ccaae7b52d88d2c91e66c80d406 (patch)
treee00e90eb161305ed9895315ba12e30ac17de9523 /net/tls
parent4ee9e6e027c06eb1dd1cdbe025d461e407ece755 (diff)
parent7008ee121089b8193aea918b98850fe87d996508 (diff)
downloadlinux-b3f7e3f23a763ccaae7b52d88d2c91e66c80d406.tar.bz2
Merge ra.kernel.org:/pub/scm/linux/kernel/git/netdev/net
Diffstat (limited to 'net/tls')
-rw-r--r--net/tls/tls_main.c10
-rw-r--r--net/tls/tls_sw.c41
2 files changed, 39 insertions, 12 deletions
diff --git a/net/tls/tls_main.c b/net/tls/tls_main.c
index dac24c7aa7d4..94774c0e5ff3 100644
--- a/net/tls/tls_main.c
+++ b/net/tls/tls_main.c
@@ -732,15 +732,19 @@ out:
return rc;
}
-static void tls_update(struct sock *sk, struct proto *p)
+static void tls_update(struct sock *sk, struct proto *p,
+ void (*write_space)(struct sock *sk))
{
struct tls_context *ctx;
ctx = tls_get_ctx(sk);
- if (likely(ctx))
+ if (likely(ctx)) {
+ ctx->sk_write_space = write_space;
ctx->sk_proto = p;
- else
+ } else {
sk->sk_prot = p;
+ sk->sk_write_space = write_space;
+ }
}
static int tls_get_info(const struct sock *sk, struct sk_buff *skb)
diff --git a/net/tls/tls_sw.c b/net/tls/tls_sw.c
index c6803a82b769..c98e602a1a2d 100644
--- a/net/tls/tls_sw.c
+++ b/net/tls/tls_sw.c
@@ -256,8 +256,6 @@ static int tls_do_decryption(struct sock *sk,
return ret;
ret = crypto_wait_req(ret, &ctx->async_wait);
- } else if (ret == -EBADMSG) {
- TLS_INC_STATS(sock_net(sk), LINUX_MIB_TLSDECRYPTERROR);
}
if (async)
@@ -682,12 +680,32 @@ static int tls_push_record(struct sock *sk, int flags,
split_point = msg_pl->apply_bytes;
split = split_point && split_point < msg_pl->sg.size;
+ if (unlikely((!split &&
+ msg_pl->sg.size +
+ prot->overhead_size > msg_en->sg.size) ||
+ (split &&
+ split_point +
+ prot->overhead_size > msg_en->sg.size))) {
+ split = true;
+ split_point = msg_en->sg.size;
+ }
if (split) {
rc = tls_split_open_record(sk, rec, &tmp, msg_pl, msg_en,
split_point, prot->overhead_size,
&orig_end);
if (rc < 0)
return rc;
+ /* This can happen if above tls_split_open_record allocates
+ * a single large encryption buffer instead of two smaller
+ * ones. In this case adjust pointers and continue without
+ * split.
+ */
+ if (!msg_pl->sg.size) {
+ tls_merge_open_record(sk, rec, tmp, orig_end);
+ msg_pl = &rec->msg_plaintext;
+ msg_en = &rec->msg_encrypted;
+ split = false;
+ }
sk_msg_trim(sk, msg_en, msg_pl->sg.size +
prot->overhead_size);
}
@@ -709,6 +727,12 @@ static int tls_push_record(struct sock *sk, int flags,
sg_mark_end(sk_msg_elem(msg_pl, i));
}
+ if (msg_pl->sg.end < msg_pl->sg.start) {
+ sg_chain(&msg_pl->sg.data[msg_pl->sg.start],
+ MAX_SKB_FRAGS - msg_pl->sg.start + 1,
+ msg_pl->sg.data);
+ }
+
i = msg_pl->sg.start;
sg_chain(rec->sg_aead_in, 2, &msg_pl->sg.data[i]);
@@ -772,7 +796,7 @@ static int bpf_exec_tx_verdict(struct sk_msg *msg, struct sock *sk,
psock = sk_psock_get(sk);
if (!psock || !policy) {
err = tls_push_record(sk, flags, record_type);
- if (err) {
+ if (err && err != -EINPROGRESS) {
*copied -= sk_msg_free(sk, msg);
tls_free_open_rec(sk);
}
@@ -783,10 +807,7 @@ more_data:
if (psock->eval == __SK_NONE) {
delta = msg->sg.size;
psock->eval = sk_psock_msg_verdict(sk, psock, msg);
- if (delta < msg->sg.size)
- delta -= msg->sg.size;
- else
- delta = 0;
+ delta -= msg->sg.size;
}
if (msg->cork_bytes && msg->cork_bytes > msg->sg.size &&
!enospc && !full_record) {
@@ -801,7 +822,7 @@ more_data:
switch (psock->eval) {
case __SK_PASS:
err = tls_push_record(sk, flags, record_type);
- if (err < 0) {
+ if (err && err != -EINPROGRESS) {
*copied -= sk_msg_free(sk, msg);
tls_free_open_rec(sk);
goto out_err;
@@ -1515,7 +1536,9 @@ static int decrypt_skb_update(struct sock *sk, struct sk_buff *skb,
if (err == -EINPROGRESS)
tls_advance_record_sn(sk, prot,
&tls_ctx->rx);
-
+ else if (err == -EBADMSG)
+ TLS_INC_STATS(sock_net(sk),
+ LINUX_MIB_TLSDECRYPTERROR);
return err;
}
} else {