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Date:      Thu, 29 Nov 2018 06:42:04 +0000 (UTC)
From:      Andrew Rybchenko <arybchik@FreeBSD.org>
To:        src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org
Subject:   svn commit: r341186 - head/sys/dev/sfxge/common
Message-ID:  <201811290642.wAT6g4tX024582@repo.freebsd.org>
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Author: arybchik
Date: Thu Nov 29 06:42:04 2018
New Revision: 341186
URL: https://svnweb.freebsd.org/changeset/base/341186

Log:
  sfxge(4): support filters for encapsulated packets
  
  This adds filters for encapsulated packets to the list
  returned by ef10_filter_supported_filters().
  
  Submitted by:   Roman Zhukov <roman.zhukov at oktetlabs.ru>
  Sponsored by:   Solarflare Communications, Inc.
  Differential Revision:  https://reviews.freebsd.org/D18217

Modified:
  head/sys/dev/sfxge/common/ef10_filter.c

Modified: head/sys/dev/sfxge/common/ef10_filter.c
==============================================================================
--- head/sys/dev/sfxge/common/ef10_filter.c	Thu Nov 29 06:41:53 2018	(r341185)
+++ head/sys/dev/sfxge/common/ef10_filter.c	Thu Nov 29 06:42:04 2018	(r341186)
@@ -922,6 +922,7 @@ efx_mcdi_get_parser_disp_info(
 	__in				efx_nic_t *enp,
 	__out_ecount(buffer_length)	uint32_t *buffer,
 	__in				size_t buffer_length,
+	__in				boolean_t encap,
 	__out				size_t *list_lengthp)
 {
 	efx_mcdi_req_t req;
@@ -938,7 +939,8 @@ efx_mcdi_get_parser_disp_info(
 	req.emr_out_buf = payload;
 	req.emr_out_length = MC_CMD_GET_PARSER_DISP_INFO_OUT_LENMAX;
 
-	MCDI_IN_SET_DWORD(req, GET_PARSER_DISP_INFO_OUT_OP,
+	MCDI_IN_SET_DWORD(req, GET_PARSER_DISP_INFO_OUT_OP, encap ?
+	    MC_CMD_GET_PARSER_DISP_INFO_IN_OP_GET_SUPPORTED_ENCAP_RX_MATCHES :
 	    MC_CMD_GET_PARSER_DISP_INFO_IN_OP_GET_SUPPORTED_RX_MATCHES);
 
 	efx_mcdi_execute(enp, &req);
@@ -998,30 +1000,68 @@ ef10_filter_supported_filters(
 	__in				size_t buffer_length,
 	__out				size_t *list_lengthp)
 {
-
+	efx_nic_cfg_t *encp = &(enp->en_nic_cfg);
 	size_t mcdi_list_length;
+	size_t mcdi_encap_list_length;
 	size_t list_length;
 	uint32_t i;
+	uint32_t next_buf_idx;
+	size_t next_buf_length;
 	efx_rc_t rc;
+	boolean_t no_space = B_FALSE;
 	efx_filter_match_flags_t all_filter_flags =
 	    (EFX_FILTER_MATCH_REM_HOST | EFX_FILTER_MATCH_LOC_HOST |
 	    EFX_FILTER_MATCH_REM_MAC | EFX_FILTER_MATCH_REM_PORT |
 	    EFX_FILTER_MATCH_LOC_MAC | EFX_FILTER_MATCH_LOC_PORT |
 	    EFX_FILTER_MATCH_ETHER_TYPE | EFX_FILTER_MATCH_INNER_VID |
 	    EFX_FILTER_MATCH_OUTER_VID | EFX_FILTER_MATCH_IP_PROTO |
+	    EFX_FILTER_MATCH_IFRM_UNKNOWN_MCAST_DST |
+	    EFX_FILTER_MATCH_IFRM_UNKNOWN_UCAST_DST |
 	    EFX_FILTER_MATCH_UNKNOWN_MCAST_DST |
 	    EFX_FILTER_MATCH_UNKNOWN_UCAST_DST);
 
-	rc = efx_mcdi_get_parser_disp_info(enp, buffer, buffer_length,
-					    &mcdi_list_length);
+	/*
+	 * Two calls to MC_CMD_GET_PARSER_DISP_INFO are needed: one to get the
+	 * list of supported filters for ordinary packets, and then another to
+	 * get the list of supported filters for encapsulated packets.
+	 */
+	rc = efx_mcdi_get_parser_disp_info(enp, buffer, buffer_length, B_FALSE,
+	    &mcdi_list_length);
 	if (rc != 0) {
-		if (rc == ENOSPC) {
-			/* Pass through mcdi_list_length for the list length */
-			*list_lengthp = mcdi_list_length;
+		if (rc == ENOSPC)
+			no_space = B_TRUE;
+		else
+			goto fail1;
+	}
+
+	if (no_space) {
+		next_buf_idx = 0;
+		next_buf_length = 0;
+	} else {
+		EFSYS_ASSERT(mcdi_list_length <= buffer_length);
+		next_buf_idx = mcdi_list_length;
+		next_buf_length = buffer_length - mcdi_list_length;
+	}
+
+	if (encp->enc_tunnel_encapsulations_supported != 0) {
+		rc = efx_mcdi_get_parser_disp_info(enp, &buffer[next_buf_idx],
+		    next_buf_length, B_TRUE, &mcdi_encap_list_length);
+		if (rc != 0) {
+			if (rc == ENOSPC)
+				no_space = B_TRUE;
+			else
+				goto fail2;
 		}
-		goto fail1;
+	} else {
+		mcdi_encap_list_length = 0;
 	}
 
+	if (no_space) {
+		*list_lengthp = mcdi_list_length + mcdi_encap_list_length;
+		rc = ENOSPC;
+		goto fail3;
+	}
+
 	/*
 	 * The static assertions in ef10_filter_init() ensure that the values of
 	 * the EFX_FILTER_MATCH flags match those used by MCDI, so they don't
@@ -1032,9 +1072,10 @@ ef10_filter_supported_filters(
 	 * of the matches is preserved as they are ordered from highest to
 	 * lowest priority.
 	 */
-	EFSYS_ASSERT(mcdi_list_length <= buffer_length);
+	EFSYS_ASSERT(mcdi_list_length + mcdi_encap_list_length <=
+	    buffer_length);
 	list_length = 0;
-	for (i = 0; i < mcdi_list_length; i++) {
+	for (i = 0; i < mcdi_list_length + mcdi_encap_list_length; i++) {
 		if ((buffer[i] & ~all_filter_flags) == 0) {
 			buffer[list_length] = buffer[i];
 			list_length++;
@@ -1045,6 +1086,10 @@ ef10_filter_supported_filters(
 
 	return (0);
 
+fail3:
+	EFSYS_PROBE(fail3);
+fail2:
+	EFSYS_PROBE(fail2);
 fail1:
 	EFSYS_PROBE1(fail1, efx_rc_t, rc);

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