diff options
| author | Jakub Kicinski <kuba@kernel.org> | 2022-04-11 12:19:15 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2022-04-13 11:45:39 +0100 |
| commit | 3547a1f9d988d88ecff4fc365d2773037c849f49 (patch) | |
| tree | c57c8f90e390d370dbc5998a82782787c5431a1b /net/tls | |
| parent | f314bfee81b1bf8e01168177b2f65f24eb8da63a (diff) | |
| download | linux-stable-3547a1f9d988d88ecff4fc365d2773037c849f49.tar.gz linux-stable-3547a1f9d988d88ecff4fc365d2773037c849f49.tar.bz2 linux-stable-3547a1f9d988d88ecff4fc365d2773037c849f49.zip | |
tls: rx: use async as an in-out argument
Propagating EINPROGRESS thru multiple layers of functions is
error prone. Use darg->async as an in/out argument, like we
use darg->zc today. On input it tells the code if async is
allowed, on output if it took place.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/tls')
| -rw-r--r-- | net/tls/tls_sw.c | 31 |
1 files changed, 16 insertions, 15 deletions
diff --git a/net/tls/tls_sw.c b/net/tls/tls_sw.c index 73c31f38dfe9..2f44f57f216a 100644 --- a/net/tls/tls_sw.c +++ b/net/tls/tls_sw.c @@ -227,7 +227,7 @@ static int tls_do_decryption(struct sock *sk, char *iv_recv, size_t data_len, struct aead_request *aead_req, - bool async) + struct tls_decrypt_arg *darg) { struct tls_context *tls_ctx = tls_get_ctx(sk); struct tls_prot_info *prot = &tls_ctx->prot_info; @@ -240,7 +240,7 @@ static int tls_do_decryption(struct sock *sk, data_len + prot->tag_size, (u8 *)iv_recv); - if (async) { + if (darg->async) { /* Using skb->sk to push sk through to crypto async callback * handler. This allows propagating errors up to the socket * if needed. It _must_ be cleared in the async handler @@ -260,11 +260,13 @@ static int tls_do_decryption(struct sock *sk, ret = crypto_aead_decrypt(aead_req); if (ret == -EINPROGRESS) { - if (async) - return ret; + if (darg->async) + return 0; ret = crypto_wait_req(ret, &ctx->async_wait); } + darg->async = false; + if (ret == -EBADMSG) TLS_INC_STATS(sock_net(sk), LINUX_MIB_TLSDECRYPTERROR); @@ -1536,9 +1538,9 @@ fallback_to_reg_recv: /* Prepare and submit AEAD request */ err = tls_do_decryption(sk, skb, sgin, sgout, iv, - data_len, aead_req, darg->async); - if (err == -EINPROGRESS) - return err; + data_len, aead_req, darg); + if (darg->async) + return 0; /* Release the pages in case iov was mapped to pages */ for (; pages > 0; pages--) @@ -1575,11 +1577,10 @@ static int decrypt_skb_update(struct sock *sk, struct sk_buff *skb, } err = decrypt_internal(sk, skb, dest, NULL, darg); - if (err < 0) { - if (err == -EINPROGRESS) - tls_advance_record_sn(sk, prot, &tls_ctx->rx); + if (err < 0) return err; - } + if (darg->async) + goto decrypt_next; decrypt_done: pad = padding_length(prot, skb); @@ -1589,8 +1590,9 @@ decrypt_done: rxm->full_len -= pad; rxm->offset += prot->prepend_size; rxm->full_len -= prot->overhead_size; - tls_advance_record_sn(sk, prot, &tls_ctx->rx); tlm->decrypted = 1; +decrypt_next: + tls_advance_record_sn(sk, prot, &tls_ctx->rx); return 0; } @@ -1796,13 +1798,12 @@ int tls_sw_recvmsg(struct sock *sk, darg.async = false; err = decrypt_skb_update(sk, skb, &msg->msg_iter, &darg); - if (err < 0 && err != -EINPROGRESS) { + if (err < 0) { tls_err_abort(sk, -EBADMSG); goto recv_end; } - if (err == -EINPROGRESS) - async = true; + async |= darg.async; /* If the type of records being processed is not known yet, * set it to record type just dequeued. If it is already known, |