From 83deb094dd5c636a790da3914008570c9fd1693f Mon Sep 17 00:00:00 2001 From: Rohit Maheshwari Date: Mon, 9 Nov 2020 16:21:36 +0530 Subject: [PATCH] ch_ktls: missing handling of header alone If an skb has only header part which doesn't start from beginning, is not being handled properly. Fixes: dc05f3df8fac ("chcr: Handle first or middle part of record") Signed-off-by: Rohit Maheshwari Signed-off-by: Jakub Kicinski --- .../chelsio/inline_crypto/ch_ktls/chcr_ktls.c | 25 ++++++++----------- 1 file changed, 11 insertions(+), 14 deletions(-) diff --git a/drivers/net/ethernet/chelsio/inline_crypto/ch_ktls/chcr_ktls.c b/drivers/net/ethernet/chelsio/inline_crypto/ch_ktls/chcr_ktls.c index 4286decce095..8a54fce9bfae 100644 --- a/drivers/net/ethernet/chelsio/inline_crypto/ch_ktls/chcr_ktls.c +++ b/drivers/net/ethernet/chelsio/inline_crypto/ch_ktls/chcr_ktls.c @@ -1744,6 +1744,17 @@ static int chcr_short_record_handler(struct chcr_ktls_info *tx_info, atomic64_inc(&tx_info->adap->ch_ktls_stats.ktls_tx_trimmed_pkts); } + /* check if it is only the header part. */ + if (tls_rec_offset + data_len <= (TLS_HEADER_SIZE + tx_info->iv_size)) { + if (chcr_ktls_tx_plaintxt(tx_info, skb, tcp_seq, mss, + tcp_push_no_fin, q, + tx_info->port_id, prior_data, + data_len, skb_offset, prior_data_len)) + goto out; + + return 0; + } + /* check if the middle record's start point is 16 byte aligned. CTR * needs 16 byte aligned start point to start encryption. */ @@ -1812,20 +1823,6 @@ static int chcr_short_record_handler(struct chcr_ktls_info *tx_info, goto out; atomic64_inc(&tx_info->adap->ch_ktls_stats.ktls_tx_middle_pkts); } else { - /* Else means, its a partial first part of the record. Check if - * its only the header, don't need to send for encryption then. - */ - if (data_len <= TLS_HEADER_SIZE + tx_info->iv_size) { - if (chcr_ktls_tx_plaintxt(tx_info, skb, tcp_seq, mss, - tcp_push_no_fin, q, - tx_info->port_id, - prior_data, - data_len, skb_offset, - prior_data_len)) { - goto out; - } - return 0; - } atomic64_inc(&tx_info->adap->ch_ktls_stats.ktls_tx_start_pkts); }