MFC r299318

sfxge(4): restructure TLV buffer validation

Move TLV buffer validation into ef10-specific function and add accessor
function which also converts the partition ID to the internal
representation.

Submitted by:   Richard Houldsworth <rhouldsworth at solarflare.com>
Sponsored by:   Solarflare Communications, Inc.

5 files changed, 62 insertions, 4 deletions

diff --git a/sys/dev/sfxge/common/efx.h b/sys/dev/sfxge/common/efx.h
index 3b67471..af7f15b 100644
--- a/sys/dev/sfxge/common/efx.h
+++ b/sys/dev/sfxge/common/efx.h
@@ -1370,11 +1370,10 @@ efx_nvram_set_version(
 	__in			efx_nvram_type_t type,
 	__in_ecount(4)		uint16_t version[4]);
 
-/* Validate contents of TLV formatted partition */
 extern	__checkReturn		efx_rc_t
-efx_nvram_tlv_validate(
+efx_nvram_validate(
 	__in			efx_nic_t *enp,
-	__in			uint32_t partn,
+	__in			efx_nvram_type_t type,
 	__in_bcount(partn_size)	caddr_t partn_data,
 	__in			size_t partn_size);
 
diff --git a/sys/dev/sfxge/common/efx_impl.h b/sys/dev/sfxge/common/efx_impl.h
index f917ba1..ff990bf 100644
--- a/sys/dev/sfxge/common/efx_impl.h
+++ b/sys/dev/sfxge/common/efx_impl.h
@@ -499,9 +499,19 @@ typedef struct efx_nvram_ops_s {
 					    uint32_t *, uint16_t *);
 	efx_rc_t	(*envo_partn_set_version)(efx_nic_t *, uint32_t,
 					    uint16_t *);
+	efx_rc_t	(*envo_buffer_validate)(efx_nic_t *, uint32_t,
+					    caddr_t, size_t);
 } efx_nvram_ops_t;
 #endif /* EFSYS_OPT_NVRAM */
 
+extern	__checkReturn		efx_rc_t
+efx_nvram_tlv_validate(
+	__in			efx_nic_t *enp,
+	__in			uint32_t partn,
+	__in_bcount(partn_size)	caddr_t partn_data,
+	__in			size_t partn_size);
+
+
 #if EFSYS_OPT_VPD
 typedef struct efx_vpd_ops_s {
 	efx_rc_t	(*evpdo_init)(efx_nic_t *);
diff --git a/sys/dev/sfxge/common/efx_nvram.c b/sys/dev/sfxge/common/efx_nvram.c
index 272e6c7..c9b1d33 100644
--- a/sys/dev/sfxge/common/efx_nvram.c
+++ b/sys/dev/sfxge/common/efx_nvram.c
@@ -51,6 +51,7 @@ static efx_nvram_ops_t	__efx_nvram_falcon_ops = {
 	falcon_nvram_partn_rw_finish,	/* envo_partn_rw_finish */
 	falcon_nvram_partn_get_version,	/* envo_partn_get_version */
 	falcon_nvram_partn_set_version,	/* envo_partn_set_version */
+	NULL,				/* envo_partn_validate */
 };
 
 #endif	/* EFSYS_OPT_FALCON */
@@ -70,6 +71,7 @@ static efx_nvram_ops_t	__efx_nvram_siena_ops = {
 	siena_nvram_partn_rw_finish,	/* envo_partn_rw_finish */
 	siena_nvram_partn_get_version,	/* envo_partn_get_version */
 	siena_nvram_partn_set_version,	/* envo_partn_set_version */
+	NULL,				/* envo_partn_validate */
 };
 
 #endif	/* EFSYS_OPT_SIENA */
@@ -89,6 +91,7 @@ static efx_nvram_ops_t	__efx_nvram_ef10_ops = {
 	ef10_nvram_partn_rw_finish,	/* envo_partn_rw_finish */
 	ef10_nvram_partn_get_version,	/* envo_partn_get_version */
 	ef10_nvram_partn_set_version,	/* envo_partn_set_version */
+	ef10_nvram_buffer_validate,	/* envo_buffer_validate */
 };
 
 #endif	/* EFSYS_OPT_HUNTINGTON || EFSYS_OPT_MEDFORD */
@@ -446,6 +449,44 @@ fail1:
 	return (rc);
 }
 
+/* Validate buffer contents (before writing to flash) */
+	__checkReturn		efx_rc_t
+efx_nvram_validate(
+	__in			efx_nic_t *enp,
+	__in			efx_nvram_type_t type,
+	__in_bcount(partn_size)	caddr_t partn_data,
+	__in			size_t partn_size)
+{
+	efx_nvram_ops_t *envop = enp->en_envop;
+	uint32_t partn;
+	efx_rc_t rc;
+
+	EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
+	EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_PROBE);
+	EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_NVRAM);
+
+	EFSYS_ASSERT3U(type, <, EFX_NVRAM_NTYPES);
+
+
+	if ((rc = envop->envo_type_to_partn(enp, type, &partn)) != 0)
+		goto fail1;
+
+	if (envop->envo_type_to_partn != NULL &&
+	    ((rc = envop->envo_buffer_validate(enp, partn,
+	    partn_data, partn_size)) != 0))
+		goto fail2;
+
+	return (0);
+
+fail2:
+	EFSYS_PROBE(fail2);
+fail1:
+	EFSYS_PROBE1(fail1, efx_rc_t, rc);
+
+	return (rc);
+}
+
+
 void
 efx_nvram_fini(
 	__in		efx_nic_t *enp)
diff --git a/sys/dev/sfxge/common/hunt_impl.h b/sys/dev/sfxge/common/hunt_impl.h
index 49ecbea..b331632 100644
--- a/sys/dev/sfxge/common/hunt_impl.h
+++ b/sys/dev/sfxge/common/hunt_impl.h
@@ -458,6 +458,14 @@ ef10_nvram_partn_set_version(
 	__in			uint32_t partn,
 	__in_ecount(4)		uint16_t version[4]);
 
+extern	__checkReturn		efx_rc_t
+ef10_nvram_buffer_validate(
+	__in			efx_nic_t *enp,
+	__in			uint32_t partn,
+	__in_bcount(buffer_size)
+				caddr_t bufferp,
+	__in			size_t buffer_size);
+
 #endif	/* EFSYS_OPT_NVRAM */
 
 
diff --git a/sys/dev/sfxge/common/hunt_nvram.c b/sys/dev/sfxge/common/hunt_nvram.c
index dd471f4..dc769e2 100644
--- a/sys/dev/sfxge/common/hunt_nvram.c
+++ b/sys/dev/sfxge/common/hunt_nvram.c
@@ -472,7 +472,7 @@ fail1:
 
 /* Validate TLV formatted partition contents (before writing to flash) */
 	__checkReturn		efx_rc_t
-efx_nvram_tlv_validate(
+ef10_nvram_buffer_validate(
 	__in			efx_nic_t *enp,
 	__in			uint32_t partn,
 	__in_bcount(partn_size)	caddr_t partn_data,