netdev.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Josh Hunt <johunt@akamai.com>
To: netdev@vger.kernel.org, intel-wired-lan@lists.osuosl.org,
	jeffrey.t.kirsher@intel.com
Cc: willemb@google.com, sridhar.samudrala@intel.com,
	aaron.f.brown@intel.com, alexander.h.duyck@linux.intel.com,
	Josh Hunt <johunt@akamai.com>,
	Alexander Duyck <alexander.h.duyck@intel.com>
Subject: [PATCH v3 3/3] i40e: Add UDP segmentation offload support
Date: Fri, 11 Oct 2019 12:53:40 -0400	[thread overview]
Message-ID: <1570812820-20052-4-git-send-email-johunt@akamai.com> (raw)
In-Reply-To: <1570812820-20052-1-git-send-email-johunt@akamai.com>

Based on a series from Alexander Duyck this change adds UDP segmentation
offload support to the i40e driver.

CC: Alexander Duyck <alexander.h.duyck@intel.com>
CC: Willem de Bruijn <willemb@google.com>
Signed-off-by: Josh Hunt <johunt@akamai.com>
---
 drivers/net/ethernet/intel/i40e/i40e_main.c |  1 +
 drivers/net/ethernet/intel/i40e/i40e_txrx.c | 12 +++++++++---
 2 files changed, 10 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c b/drivers/net/ethernet/intel/i40e/i40e_main.c
index 6031223eafab..56f8c52cbba1 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_main.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_main.c
@@ -12911,6 +12911,7 @@ static int i40e_config_netdev(struct i40e_vsi *vsi)
 			  NETIF_F_GSO_IPXIP6		|
 			  NETIF_F_GSO_UDP_TUNNEL	|
 			  NETIF_F_GSO_UDP_TUNNEL_CSUM	|
+			  NETIF_F_GSO_UDP_L4		|
 			  NETIF_F_SCTP_CRC		|
 			  NETIF_F_RXHASH		|
 			  NETIF_F_RXCSUM		|
diff --git a/drivers/net/ethernet/intel/i40e/i40e_txrx.c b/drivers/net/ethernet/intel/i40e/i40e_txrx.c
index e3f29dc8b290..b8496037ef7f 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_txrx.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_txrx.c
@@ -2960,10 +2960,16 @@ static int i40e_tso(struct i40e_tx_buffer *first, u8 *hdr_len,
 
 	/* remove payload length from inner checksum */
 	paylen = skb->len - l4_offset;
-	csum_replace_by_diff(&l4.tcp->check, (__force __wsum)htonl(paylen));
 
-	/* compute length of segmentation header */
-	*hdr_len = (l4.tcp->doff * 4) + l4_offset;
+	if (skb_shinfo(skb)->gso_type & SKB_GSO_UDP_L4) {
+		csum_replace_by_diff(&l4.udp->check, (__force __wsum)htonl(paylen));
+		/* compute length of segmentation header */
+		*hdr_len = sizeof(*l4.udp) + l4_offset;
+	} else {
+		csum_replace_by_diff(&l4.tcp->check, (__force __wsum)htonl(paylen));
+		/* compute length of segmentation header */
+		*hdr_len = (l4.tcp->doff * 4) + l4_offset;
+	}
 
 	/* pull values out of skb_shinfo */
 	gso_size = skb_shinfo(skb)->gso_size;
-- 
2.7.4


  parent reply	other threads:[~2019-10-11 16:53 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-10-11 16:53 [PATCH v3 0/3] igb, ixgbe, i40e UDP segmentation offload support Josh Hunt
2019-10-11 16:53 ` [PATCH v3 1/3] igb: Add " Josh Hunt
2019-10-25  3:26   ` Brown, Aaron F
2019-10-11 16:53 ` [PATCH v3 2/3] ixgbe: " Josh Hunt
2019-10-16 16:43   ` [Intel-wired-lan] " Bowers, AndrewX
2019-10-18 18:04     ` Josh Hunt
2019-10-11 16:53 ` Josh Hunt [this message]
2019-10-11 17:39   ` [PATCH v3 3/3] i40e: " Samudrala, Sridhar
2019-10-11 17:56     ` Alexander Duyck
2019-10-11 18:59       ` Samudrala, Sridhar
2019-10-16 16:44   ` [Intel-wired-lan] " Bowers, AndrewX

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=1570812820-20052-4-git-send-email-johunt@akamai.com \
    --to=johunt@akamai.com \
    --cc=aaron.f.brown@intel.com \
    --cc=alexander.h.duyck@intel.com \
    --cc=alexander.h.duyck@linux.intel.com \
    --cc=intel-wired-lan@lists.osuosl.org \
    --cc=jeffrey.t.kirsher@intel.com \
    --cc=netdev@vger.kernel.org \
    --cc=sridhar.samudrala@intel.com \
    --cc=willemb@google.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).