diff mbox series

[v4,2/2] net/bnx2x: fix warnings about rte_memcpy lengths

Message ID 20221228114043.98739-2-mb@smartsharesystems.com (mailing list archive)
State Superseded, archived
Delegated to: Thomas Monjalon
Headers
Series [v4,1/2] eal: add nonnull and access function attributes |

Checks

Context Check Description
ci/checkpatch warning coding style issues
ci/loongarch-compilation success Compilation OK
ci/loongarch-unit-testing success Unit Testing PASS
ci/Intel-compilation fail Compilation issues
ci/iol-broadcom-Performance success Performance Testing PASS
ci/intel-Testing success Testing PASS
ci/iol-intel-Functional success Functional Testing PASS
ci/iol-intel-Performance success Performance Testing PASS
ci/iol-abi-testing success Testing PASS
ci/iol-x86_64-compile-testing fail Testing issues
ci/github-robot: build success github build: passed
ci/iol-aarch64-unit-testing success Testing PASS
ci/iol-testing fail Testing issues
ci/iol-aarch64-compile-testing success Testing PASS

Commit Message

Morten Brørup Dec. 28, 2022, 11:40 a.m. UTC 
  Bugfix: The vlan in the bulletin does not contain a VLAN header, only the
VLAN ID, so only copy 2 byte, not 4. The target structure has padding
after the field, so copying 2 byte too many is effectively harmless.
There is no need to backport this patch.

Added type casts where copying arrays to the offset of a first field in a
structure holding multiple fields, to avoid compiler warnings.

Bugzilla ID: 1146

Signed-off-by: Morten Brørup <mb@smartsharesystems.com>

v4:
* Type casting did not fix the warnings, so use RTE_PTR_ADD instead.
v3:
* First patch in series.
---
 drivers/net/bnx2x/bnx2x_stats.c | 11 +++++++----
 drivers/net/bnx2x/bnx2x_vfpf.c  |  2 +-
 2 files changed, 8 insertions(+), 5 deletions(-)
diff mbox series

Patch

diff --git a/drivers/net/bnx2x/bnx2x_stats.c b/drivers/net/bnx2x/bnx2x_stats.c
index c07b01510a..1c44504663 100644
--- a/drivers/net/bnx2x/bnx2x_stats.c
+++ b/drivers/net/bnx2x/bnx2x_stats.c
@@ -819,8 +819,9 @@  bnx2x_hw_stats_update(struct bnx2x_softc *sc)
 
     rte_memcpy(old, new, sizeof(struct nig_stats));
 
-    rte_memcpy(&(estats->rx_stat_ifhcinbadoctets_hi), &(pstats->mac_stx[1]),
-	   sizeof(struct mac_stx));
+    rte_memcpy(RTE_PTR_ADD(estats,
+	   offsetof(struct bnx2x_eth_stats, rx_stat_ifhcinbadoctets_hi)),
+	   &(pstats->mac_stx[1]), sizeof(struct mac_stx));
     estats->brb_drop_hi = pstats->brb_drop_hi;
     estats->brb_drop_lo = pstats->brb_drop_lo;
 
@@ -1492,9 +1493,11 @@  bnx2x_stats_init(struct bnx2x_softc *sc)
 		REG_RD(sc, NIG_REG_STAT0_BRB_TRUNCATE + port*0x38);
 	if (!CHIP_IS_E3(sc)) {
 		REG_RD_DMAE(sc, NIG_REG_STAT0_EGRESS_MAC_PKT0 + port*0x50,
-				&(sc->port.old_nig_stats.egress_mac_pkt0_lo), 2);
+				RTE_PTR_ADD(&(sc->port.old_nig_stats),
+				offsetof(struct nig_stats, egress_mac_pkt0_lo)), 2);
 		REG_RD_DMAE(sc, NIG_REG_STAT0_EGRESS_MAC_PKT1 + port*0x50,
-				&(sc->port.old_nig_stats.egress_mac_pkt1_lo), 2);
+				RTE_PTR_ADD(&(sc->port.old_nig_stats),
+				offsetof(struct nig_stats, egress_mac_pkt1_lo)), 2);
 	}
 
 	/* function stats */
diff --git a/drivers/net/bnx2x/bnx2x_vfpf.c b/drivers/net/bnx2x/bnx2x_vfpf.c
index 63953c2979..87631c76ca 100644
--- a/drivers/net/bnx2x/bnx2x_vfpf.c
+++ b/drivers/net/bnx2x/bnx2x_vfpf.c
@@ -54,7 +54,7 @@  bnx2x_check_bull(struct bnx2x_softc *sc)
 	if (valid_bitmap & (1 << MAC_ADDR_VALID) && memcmp(bull->mac, sc->old_bulletin.mac, ETH_ALEN))
 		rte_memcpy(&sc->link_params.mac_addr, bull->mac, ETH_ALEN);
 	if (valid_bitmap & (1 << VLAN_VALID))
-		rte_memcpy(&bull->vlan, &sc->old_bulletin.vlan, RTE_VLAN_HLEN);
+		rte_memcpy(&bull->vlan, &sc->old_bulletin.vlan, sizeof(bull->vlan));
 
 	sc->old_bulletin = *bull;