iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

bnxt_en: Set TSO max segs on devices with limits

Browse Source 
Firmware will now advertise a non-zero TSO max segments if the
device has a limit.  0 means no limit.  The latest 5760X chip
(early revs) has a limit of 2047 that cannot be exceeded.  If
exceeded, the chip will send out just a small number of segments.

Call netif_set_tso_max_segs() if the device has a limit.

Fixes: 2012a6abc876 ("bnxt_en: Add 5760X (P7) PCI IDs")
Reviewed-by: Ajit Khaparde <ajit.khaparde@broadcom.com>
Reviewed-by: Somnath Kotur <somnath.kotur@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Link: https://lore.kernel.org/r/20240618215313.29631-3-michael.chan@broadcom.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Michael Chan 2024-06-18 14:53:12 -07:00 committed by Jakub Kicinski
parent 8ad0440992
commit b7bfcb4c7c
2 changed files with 4 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/net/ethernet/broadcom/bnxt/bnxt.c
View File

@ -8996,6 +8996,7 @@ static int __bnxt_hwrm_func_qcaps(struct bnxt *bp)
memcpy(vf->mac_addr, resp->mac_address, ETH_ALEN);
#endif
}
bp->tso_max_segs = le16_to_cpu(resp->max_tso_segs);
hwrm_func_qcaps_exit:
hwrm_req_drop(bp, req);
@ -15363,6 +15364,8 @@ static int bnxt_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
dev->priv_flags |= IFF_UNICAST_FLT;
netif_set_tso_max_size(dev, GSO_MAX_SIZE);
if (bp->tso_max_segs)
netif_set_tso_max_segs(dev, bp->tso_max_segs);
dev->xdp_features = NETDEV_XDP_ACT_BASIC | NETDEV_XDP_ACT_REDIRECT |
NETDEV_XDP_ACT_RX_SG;

1
drivers/net/ethernet/broadcom/bnxt/bnxt.h
View File

@ -2318,6 +2318,7 @@ struct bnxt {
u8 rss_hash_key_updated:1;
u16 max_mtu;
u16 tso_max_segs;
u8 max_tc;
u8 max_lltc; /* lossless TCs */
struct bnxt_queue_info q_info[BNXT_MAX_QUEUE];