[PATCH AUTOSEL 5.15 019/109] sfc: ef10: Fix assigning negative value to unsigned variable
From: Sasha Levin <sashal@kernel.org>
Date: 2022-05-30 14:07:11
Also in:
lkml, stable
Subsystem:
networking drivers, sfc network driver, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Edward Cree, Linus Torvalds
From: Haowen Bai <redacted> [ Upstream commit b8ff3395fbdf3b79a99d0ef410fc34c51044121e ] fix warning reported by smatch: 251 drivers/net/ethernet/sfc/ef10.c:2259 efx_ef10_tx_tso_desc() warn: assigning (-208) to unsigned variable 'ip_tot_len' Signed-off-by: Haowen Bai <redacted> Acked-by: Edward Cree <ecree.xilinx@gmail.com> Link: https://lore.kernel.org/r/1649640757-30041-1-git-send-email-baihaowen@meizu.com (local) Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org> --- drivers/net/ethernet/sfc/ef10.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/sfc/ef10.c b/drivers/net/ethernet/sfc/ef10.c
index f5a4d8f4fd11..c1cd1c97f09d 100644
--- a/drivers/net/ethernet/sfc/ef10.c
+++ b/drivers/net/ethernet/sfc/ef10.c@@ -2256,7 +2256,7 @@ int efx_ef10_tx_tso_desc(struct efx_tx_queue *tx_queue, struct sk_buff *skb, * guaranteed to satisfy the second as we only attempt TSO if * inner_network_header <= 208. */ - ip_tot_len = -EFX_TSO2_MAX_HDRLEN; + ip_tot_len = 0x10000 - EFX_TSO2_MAX_HDRLEN; EFX_WARN_ON_ONCE_PARANOID(mss + EFX_TSO2_MAX_HDRLEN + (tcp->doff << 2u) > ip_tot_len);
--
2.35.1