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sfxge(4): support filters for encapsulated packets

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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
This commit is contained in:
arybchik 2018-11-29 06:42:04 +00:00
parent 68dbcaa4ea
commit 3f3c817705
1 changed files with 55 additions and 10 deletions
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65
sys/dev/sfxge/common/ef10_filter.c
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@ -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);
@ -998,28 +1000,66 @@ 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;
}
/*
@ -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);