[dpdk-stable] patch 'net/sfc/base: fix PreFAST warnings because of unused return' has been queued to stable release 18.08.1

[Kevin Traynor]

Hi,

FYI, your patch has been queued to stable release 18.08.1

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 11/26/18. So please
shout if anyone has objections.

Also note that after the patch there's a diff of the upstream commit vs the patch applied
to the branch. If the code is different (ie: not only metadata diffs), due for example to
a change in context or macro names, please double check it.

Thanks.

Kevin Traynor

---
>From a2c927689e13c0a03cce406648d8be238d0b9806 Mon Sep 17 00:00:00 2001
From: Martin Harvey <mharvey at solarflare.com>
Date: Mon, 10 Sep 2018 10:33:00 +0100
Subject: [PATCH] net/sfc/base: fix PreFAST warnings because of unused return

[ upstream commit f394c63d2d33449443a42e86da826c38e98d59b3 ]

Fixes: 19b64c6ac35f ("net/sfc/base: import libefx base")
Fixes: d96a34d165b1 ("net/sfc/base: import NVRAM support")
Fixes: e7cd430c864f ("net/sfc/base: import SFN7xxx family support")

Signed-off-by: Martin Harvey <mharvey at solarflare.com>
Signed-off-by: Andrew Rybchenko <arybchenko at solarflare.com>
---
 drivers/net/sfc/base/ef10_filter.c | 47 ++++++++++++++++++++++++------
 drivers/net/sfc/base/ef10_mac.c    |  2 +-
 drivers/net/sfc/base/ef10_nic.c    |  4 +--
 drivers/net/sfc/base/ef10_nvram.c  |  4 +--
 drivers/net/sfc/base/ef10_tx.c     |  8 +++--
 drivers/net/sfc/base/efx_port.c    |  2 +-
 6 files changed, 49 insertions(+), 18 deletions(-)

diff --git a/drivers/net/sfc/base/ef10_filter.c b/drivers/net/sfc/base/ef10_filter.c
index ae872853d..a4d97f99c 100644
--- a/drivers/net/sfc/base/ef10_filter.c
+++ b/drivers/net/sfc/base/ef10_filter.c
@@ -1145,10 +1145,13 @@ ef10_filter_insert_unicast(
 	    filter_flags,
 	    eftp->eft_default_rxq);
-	efx_filter_spec_set_eth_local(&spec, EFX_FILTER_SPEC_VID_UNSPEC, addr);
+	rc = efx_filter_spec_set_eth_local(&spec, EFX_FILTER_SPEC_VID_UNSPEC,
+	    addr);
+	if (rc != 0)
+		goto fail1;
 
 	rc = ef10_filter_add_internal(enp, &spec, B_TRUE,
 	    &eftp->eft_unicst_filter_indexes[eftp->eft_unicst_filter_count]);
 	if (rc != 0)
-		goto fail1;
+		goto fail2;
 
 	eftp->eft_unicst_filter_count++;
@@ -1158,4 +1161,6 @@ ef10_filter_insert_unicast(
 	return (0);
 
+fail2:
+	EFSYS_PROBE(fail2);
 fail1:
 	EFSYS_PROBE1(fail1, efx_rc_t, rc);
@@ -1176,9 +1181,11 @@ ef10_filter_insert_all_unicast(
 	    filter_flags,
 	    eftp->eft_default_rxq);
-	efx_filter_spec_set_uc_def(&spec);
+	rc = efx_filter_spec_set_uc_def(&spec);
+	if (rc != 0)
+		goto fail1;
 	rc = ef10_filter_add_internal(enp, &spec, B_TRUE,
 	    &eftp->eft_unicst_filter_indexes[eftp->eft_unicst_filter_count]);
 	if (rc != 0)
-		goto fail1;
+		goto fail2;
 
 	eftp->eft_unicst_filter_count++;
@@ -1188,4 +1195,6 @@ ef10_filter_insert_all_unicast(
 	return (0);
 
+fail2:
+	EFSYS_PROBE(fail2);
 fail1:
 	EFSYS_PROBE1(fail1, efx_rc_t, rc);
@@ -1229,7 +1238,19 @@ ef10_filter_insert_multicast_list(
 		    eftp->eft_default_rxq);
 
-		efx_filter_spec_set_eth_local(&spec,
+		rc = efx_filter_spec_set_eth_local(&spec,
 		    EFX_FILTER_SPEC_VID_UNSPEC,
 		    &addrs[i * EFX_MAC_ADDR_LEN]);
+		if (rc != 0) {
+			if (rollback == B_TRUE) {
+				/* Only stop upon failure if told to rollback */
+				goto rollback;
+			} else {
+				/*
+				 * Don't try to add a filter with a corrupt
+				 * specification.
+				 */
+				continue;
+			}
+		}
 
 		rc = ef10_filter_add_internal(enp, &spec, B_TRUE,
@@ -1254,6 +1275,10 @@ ef10_filter_insert_multicast_list(
 
 		EFX_MAC_BROADCAST_ADDR_SET(addr);
-		efx_filter_spec_set_eth_local(&spec, EFX_FILTER_SPEC_VID_UNSPEC,
-		    addr);
+		rc = efx_filter_spec_set_eth_local(&spec,
+		    EFX_FILTER_SPEC_VID_UNSPEC, addr);
+		if ((rc != 0) && (rollback == B_TRUE)) {
+			/* Only stop upon failure if told to rollback */
+			goto rollback;
+		}
 
 		rc = ef10_filter_add_internal(enp, &spec, B_TRUE,
@@ -1303,10 +1328,12 @@ ef10_filter_insert_all_multicast(
 	    filter_flags,
 	    eftp->eft_default_rxq);
-	efx_filter_spec_set_mc_def(&spec);
+	rc = efx_filter_spec_set_mc_def(&spec);
+	if (rc != 0)
+		goto fail1;
 
 	rc = ef10_filter_add_internal(enp, &spec, B_TRUE,
 	    &eftp->eft_mulcst_filter_indexes[0]);
 	if (rc != 0)
-		goto fail1;
+		goto fail2;
 
 	eftp->eft_mulcst_filter_count = 1;
@@ -1319,4 +1346,6 @@ ef10_filter_insert_all_multicast(
 	return (0);
 
+fail2:
+	EFSYS_PROBE(fail2);
 fail1:
 	EFSYS_PROBE1(fail1, efx_rc_t, rc);
diff --git a/drivers/net/sfc/base/ef10_mac.c b/drivers/net/sfc/base/ef10_mac.c
index 1031e8369..c14010732 100644
--- a/drivers/net/sfc/base/ef10_mac.c
+++ b/drivers/net/sfc/base/ef10_mac.c
@@ -413,5 +413,5 @@ ef10_mac_filter_default_rxq_clear(
 	ef10_filter_default_rxq_clear(enp);
 
-	efx_filter_reconfigure(enp, epp->ep_mac_addr,
+	(void) efx_filter_reconfigure(enp, epp->ep_mac_addr,
 				    epp->ep_all_unicst, epp->ep_mulcst,
 				    epp->ep_all_mulcst, epp->ep_brdcst,
diff --git a/drivers/net/sfc/base/ef10_nic.c b/drivers/net/sfc/base/ef10_nic.c
index 7dbf843bf..d1985b3c5 100644
--- a/drivers/net/sfc/base/ef10_nic.c
+++ b/drivers/net/sfc/base/ef10_nic.c
@@ -807,5 +807,5 @@ fail1:
 		handlep = &enp->en_arch.ef10.ena_piobuf_handle[i];
 
-		efx_mcdi_free_piobuf(enp, *handlep);
+		(void) efx_mcdi_free_piobuf(enp, *handlep);
 		*handlep = EFX_PIOBUF_HANDLE_INVALID;
 	}
@@ -824,5 +824,5 @@ ef10_nic_free_piobufs(
 		handlep = &enp->en_arch.ef10.ena_piobuf_handle[i];
 
-		efx_mcdi_free_piobuf(enp, *handlep);
+		(void) efx_mcdi_free_piobuf(enp, *handlep);
 		*handlep = EFX_PIOBUF_HANDLE_INVALID;
 	}
diff --git a/drivers/net/sfc/base/ef10_nvram.c b/drivers/net/sfc/base/ef10_nvram.c
index 2883ec8f4..0d885ccdf 100644
--- a/drivers/net/sfc/base/ef10_nvram.c
+++ b/drivers/net/sfc/base/ef10_nvram.c
@@ -1809,5 +1809,5 @@ ef10_nvram_partn_write_segment_tlv(
 
 	/* Unlock the partition */
-	ef10_nvram_partn_unlock(enp, partn, NULL);
+	(void) ef10_nvram_partn_unlock(enp, partn, NULL);
 
 	EFSYS_KMEM_FREE(enp->en_esip, partn_size, partn_data);
@@ -1824,5 +1824,5 @@ fail4:
 	EFSYS_PROBE(fail4);
 
-	ef10_nvram_partn_unlock(enp, partn, NULL);
+	(void) ef10_nvram_partn_unlock(enp, partn, NULL);
 fail3:
 	EFSYS_PROBE(fail3);
diff --git a/drivers/net/sfc/base/ef10_tx.c b/drivers/net/sfc/base/ef10_tx.c
index 7d27f7100..b92cadcbf 100644
--- a/drivers/net/sfc/base/ef10_tx.c
+++ b/drivers/net/sfc/base/ef10_tx.c
@@ -279,5 +279,5 @@ ef10_tx_qpio_enable(
 fail3:
 	EFSYS_PROBE(fail3);
-	ef10_nic_pio_free(enp, etp->et_pio_bufnum, etp->et_pio_blknum);
+	(void) ef10_nic_pio_free(enp, etp->et_pio_bufnum, etp->et_pio_blknum);
 fail2:
 	EFSYS_PROBE(fail2);
@@ -297,8 +297,10 @@ ef10_tx_qpio_disable(
 	if (etp->et_pio_size != 0) {
 		/* Unlink the piobuf from this TXQ */
-		ef10_nic_pio_unlink(enp, etp->et_index);
+		if (ef10_nic_pio_unlink(enp, etp->et_index) != 0)
+			return;
 
 		/* Free the sub-allocated PIO block */
-		ef10_nic_pio_free(enp, etp->et_pio_bufnum, etp->et_pio_blknum);
+		(void) ef10_nic_pio_free(enp, etp->et_pio_bufnum,
+		    etp->et_pio_blknum);
 		etp->et_pio_size = 0;
 		etp->et_pio_write_offset = 0;
diff --git a/drivers/net/sfc/base/efx_port.c b/drivers/net/sfc/base/efx_port.c
index 33a1a0843..5fff932be 100644
--- a/drivers/net/sfc/base/efx_port.c
+++ b/drivers/net/sfc/base/efx_port.c
@@ -38,5 +38,5 @@ efx_port_init(
 
 	/* Pick up current phy capababilities */
-	efx_port_poll(enp, NULL);
+	(void) efx_port_poll(enp, NULL);
 
 	/*
-- 
2.19.0

---
  Diff of the applied patch vs upstream commit (please double-check if non-empty:
---
--- -	2018-11-21 15:59:13.648082084 +0000
+++ 0001-net-sfc-base-fix-PreFAST-warnings-because-of-unused-.patch	2018-11-21 15:59:13.000000000 +0000
@@ -1,12 +1,13 @@
-From f394c63d2d33449443a42e86da826c38e98d59b3 Mon Sep 17 00:00:00 2001
+From a2c927689e13c0a03cce406648d8be238d0b9806 Mon Sep 17 00:00:00 2001
 From: Martin Harvey <mharvey at solarflare.com>
 Date: Mon, 10 Sep 2018 10:33:00 +0100
 Subject: [PATCH] net/sfc/base: fix PreFAST warnings because of unused return
 
+[ upstream commit f394c63d2d33449443a42e86da826c38e98d59b3 ]
+
 Fixes: 19b64c6ac35f ("net/sfc/base: import libefx base")
 Fixes: d96a34d165b1 ("net/sfc/base: import NVRAM support")
 Fixes: e7cd430c864f ("net/sfc/base: import SFN7xxx family support")
-Cc: stable at dpdk.org
 
 Signed-off-by: Martin Harvey <mharvey at solarflare.com>
 Signed-off-by: Andrew Rybchenko <arybchenko at solarflare.com>