diff options
| author | Ben Hutchings <bhutchings@solarflare.com> | 2013-05-16 18:38:11 +0100 |
|---|---|---|
| committer | Ben Hutchings <bhutchings@solarflare.com> | 2013-06-24 19:58:32 +0100 |
| commit | d07df8ec089cc72dded73dac5cf564ef9bba2fa1 (patch) | |
| tree | 4fb949cce39f9931690c36cc77d4d3f4f46d859a /drivers | |
| parent | 3ea84c5492e19daa478fad42f97b7dda9289e71c (diff) | |
| download | linux-d07df8ec089cc72dded73dac5cf564ef9bba2fa1.tar.bz2 | |
sfc: Define and set RX buffer flag for packets parsed as TCP
This will be useful for shortcutting some software packet parsing.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/ethernet/sfc/net_driver.h | 1 | ||||
| -rw-r--r-- | drivers/net/ethernet/sfc/nic.c | 19 |
2 files changed, 15 insertions, 5 deletions
diff --git a/drivers/net/ethernet/sfc/net_driver.h b/drivers/net/ethernet/sfc/net_driver.h index 2dec48bed274..f4c7e6b67743 100644 --- a/drivers/net/ethernet/sfc/net_driver.h +++ b/drivers/net/ethernet/sfc/net_driver.h @@ -243,6 +243,7 @@ struct efx_rx_buffer { #define EFX_RX_BUF_LAST_IN_PAGE 0x0001 #define EFX_RX_PKT_CSUMMED 0x0002 #define EFX_RX_PKT_DISCARD 0x0004 +#define EFX_RX_PKT_TCP 0x0040 /** * struct efx_rx_page_state - Page-based rx buffer state diff --git a/drivers/net/ethernet/sfc/nic.c b/drivers/net/ethernet/sfc/nic.c index 39432d3d1fe9..f2b864c14ca9 100644 --- a/drivers/net/ethernet/sfc/nic.c +++ b/drivers/net/ethernet/sfc/nic.c @@ -1080,12 +1080,21 @@ efx_handle_rx_event(struct efx_channel *channel, const efx_qword_t *event) rx_ev_hdr_type = EFX_QWORD_FIELD(*event, FSF_AZ_RX_EV_HDR_TYPE); if (likely(rx_ev_pkt_ok)) { - /* If packet is marked as OK and packet type is TCP/IP or - * UDP/IP, then we can rely on the hardware checksum. + /* If packet is marked as OK then we can rely on the + * hardware checksum and classification. */ - flags = (rx_ev_hdr_type == FSE_CZ_RX_EV_HDR_TYPE_IPV4V6_TCP || - rx_ev_hdr_type == FSE_CZ_RX_EV_HDR_TYPE_IPV4V6_UDP) ? - EFX_RX_PKT_CSUMMED : 0; + flags = 0; + switch (rx_ev_hdr_type) { + case FSE_CZ_RX_EV_HDR_TYPE_IPV4V6_TCP: + flags |= EFX_RX_PKT_TCP; + /* fall through */ + case FSE_CZ_RX_EV_HDR_TYPE_IPV4V6_UDP: + flags |= EFX_RX_PKT_CSUMMED; + /* fall through */ + case FSE_CZ_RX_EV_HDR_TYPE_IPV4V6_OTHER: + case FSE_AZ_RX_EV_HDR_TYPE_OTHER: + break; + } } else { flags = efx_handle_rx_not_ok(rx_queue, event); } |