diff options
| author | Dirk van der Merwe <dirk.vandermerwe@netronome.com> | 2019-07-08 19:53:13 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2019-07-08 20:21:09 -0700 |
| commit | b5d9a834f4fd1b6abfa527ec351c871084dd23a3 (patch) | |
| tree | c000cc90aec8e553040f920c62f64e530cf6de6b /drivers/net/ethernet/netronome/nfp | |
| parent | 427545b3046326cd7b4dbbd7869f08737df2ad2b (diff) | |
| download | linux-b5d9a834f4fd1b6abfa527ec351c871084dd23a3.tar.bz2 | |
net/tls: don't clear TX resync flag on error
Introduce a return code for the tls_dev_resync callback.
When the driver TX resync fails, kernel can retry the resync again
until it succeeds. This prevents drivers from attempting to offload
TLS packets if the connection is known to be out of sync.
We don't worry about the RX resync since they will be retried naturally
as more encrypted records get received.
Signed-off-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/netronome/nfp')
| -rw-r--r-- | drivers/net/ethernet/netronome/nfp/crypto/tls.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/drivers/net/ethernet/netronome/nfp/crypto/tls.c b/drivers/net/ethernet/netronome/nfp/crypto/tls.c index b49405b4af55..d448c6de8ea4 100644 --- a/drivers/net/ethernet/netronome/nfp/crypto/tls.c +++ b/drivers/net/ethernet/netronome/nfp/crypto/tls.c @@ -403,7 +403,7 @@ nfp_net_tls_del(struct net_device *netdev, struct tls_context *tls_ctx, nfp_net_tls_del_fw(nn, ntls->fw_handle); } -static void +static int nfp_net_tls_resync(struct net_device *netdev, struct sock *sk, u32 seq, u8 *rcd_sn, enum tls_offload_ctx_dir direction) { @@ -412,11 +412,12 @@ nfp_net_tls_resync(struct net_device *netdev, struct sock *sk, u32 seq, struct nfp_crypto_req_update *req; struct sk_buff *skb; gfp_t flags; + int err; flags = direction == TLS_OFFLOAD_CTX_DIR_TX ? GFP_KERNEL : GFP_ATOMIC; skb = nfp_net_tls_alloc_simple(nn, sizeof(*req), flags); if (!skb) - return; + return -ENOMEM; ntls = tls_driver_ctx(sk, direction); req = (void *)skb->data; @@ -428,13 +429,17 @@ nfp_net_tls_resync(struct net_device *netdev, struct sock *sk, u32 seq, memcpy(req->rec_no, rcd_sn, sizeof(req->rec_no)); if (direction == TLS_OFFLOAD_CTX_DIR_TX) { - nfp_net_tls_communicate_simple(nn, skb, "sync", - NFP_CCM_TYPE_CRYPTO_UPDATE); + err = nfp_net_tls_communicate_simple(nn, skb, "sync", + NFP_CCM_TYPE_CRYPTO_UPDATE); + if (err) + return err; ntls->next_seq = seq; } else { nfp_ccm_mbox_post(nn, skb, NFP_CCM_TYPE_CRYPTO_UPDATE, sizeof(struct nfp_crypto_reply_simple)); } + + return 0; } static const struct tlsdev_ops nfp_net_tls_ops = { |