diff options
| author | Aditya Garg <gargaditya@linux.microsoft.com> | 2025-11-18 03:11:08 -0800 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2025-11-19 20:11:57 -0800 |
| commit | 934fa943b53795339486cc0026b3ab7ad39dc600 (patch) | |
| tree | 51d4848d5a4486e024fd8ad56c39f86b02b4459f /include/net/mana/mana.h | |
| parent | 929ca3bceab8eaeeb452c0574999c7c6d12b3772 (diff) | |
net: mana: Handle SKB if TX SGEs exceed hardware limit
The MANA hardware supports a maximum of 30 scatter-gather entries (SGEs)
per TX WQE. Exceeding this limit can cause TX failures.
Add ndo_features_check() callback to validate SKB layout before
transmission. For GSO SKBs that would exceed the hardware SGE limit, clear
NETIF_F_GSO_MASK to enforce software segmentation in the stack.
Add a fallback in mana_start_xmit() to linearize non-GSO SKBs that still
exceed the SGE limit.
Also, Add ethtool counter for SKBs linearized
Co-developed-by: Dipayaan Roy <dipayanroy@linux.microsoft.com>
Signed-off-by: Dipayaan Roy <dipayanroy@linux.microsoft.com>
Signed-off-by: Aditya Garg <gargaditya@linux.microsoft.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com>
Link: https://patch.msgid.link/1763464269-10431-2-git-send-email-gargaditya@linux.microsoft.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'include/net/mana/mana.h')
| -rw-r--r-- | include/net/mana/mana.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/net/mana/mana.h b/include/net/mana/mana.h index d37f4cea0ac3..fb28b3cac067 100644 --- a/include/net/mana/mana.h +++ b/include/net/mana/mana.h @@ -377,6 +377,7 @@ struct mana_ethtool_stats { u64 wake_queue; u64 tx_cqe_err; u64 tx_cqe_unknown_type; + u64 tx_linear_pkt_cnt; u64 rx_coalesced_err; u64 rx_cqe_unknown_type; }; |