Re: [PATCH net 2/2] macsec: fix checksumming after decryption
From: Andreas Steinmetz <hidden>
Date: 2019-07-02 19:48:26
On Tue, 2019-07-02 at 10:35 -0400, Willem de Bruijn wrote:
On Tue, Jul 2, 2019 at 12:25 AM Andreas Steinmetz [off-list ref] wrote:quoted
On Sun, 2019-06-30 at 21:47 -0400, Willem de Bruijn wrote:quoted
On Sun, Jun 30, 2019 at 4:48 PM Andreas Steinmetz [off-list ref] wrote:quoted
Fix checksumming after decryption. Signed-off-by: Andreas Steinmetz <redacted>--- a/drivers/net/macsec.c 2019-06-30 22:14:10.250285314 +0200 +++ b/drivers/net/macsec.c 2019-06-30 22:15:11.931230417 +0200@@ -869,6 +869,7 @@ static void macsec_finalize_skb(struct sk_buff *skb, u8 icv_len,u8 hdr_len) { + skb->ip_summed = CHECKSUM_NONE; memmove(skb->data + hdr_len, skb->data, 2 * ETH_ALEN); skb_pull(skb, hdr_len); pskb_trim_unique(skb, skb->len - icv_len);Does this belong in macset_reset_skb?Putting this in macsec_reset_skb would then miss out the "nosci:" part of the RX path in macsec_handle_frame().It is called on each nskb before calling netif_rx. It indeed is not called when returning RX_HANDLER_PASS, but that is correct?
This is correct. Packets passed on with RX_HANDLER_PASS are either not for this driver or the special case of being destined for a KaY and in this case being the MACsec ethernet protocol and thus not IP, so no checksumming.