94 lines
2.7 KiB
Diff
94 lines
2.7 KiB
Diff
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From 7e941e7a1560699a18c5890cb6e1309161bc01af Mon Sep 17 00:00:00 2001
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Message-ID: <7e941e7a1560699a18c5890cb6e1309161bc01af.1706279136.git.davide.caratti@gmail.com>
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From: leiwei <quic_leiwei@quicinc.com>
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Date: Mon, 15 Nov 2021 18:43:33 +0800
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Subject: [PATCH] macsec_linux: Support cipher suite configuration
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Set the cipher suite for the link. Unlike the other parameters, this
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needs to be done with the first rtnl_link_add() call (NLM_F_CREATE))
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instead of the update in try_commit() since the kernel is rejecting
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changes to the cipher suite after the link is first added.
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Signed-off-by: leiwei <quic_leiwei@quicinc.com>
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---
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src/drivers/driver_macsec_linux.c | 25 ++++++++++++++++++++++---
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1 file changed, 22 insertions(+), 3 deletions(-)
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--- a/src/drivers/driver_macsec_linux.c
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+++ b/src/drivers/driver_macsec_linux.c
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@@ -77,6 +77,9 @@ struct macsec_drv_data {
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u8 encoding_sa;
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bool encoding_sa_set;
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+
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+ u64 cipher_suite;
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+ bool cipher_suite_set;
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};
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@@ -460,8 +463,14 @@ static int macsec_drv_set_replay_protect
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*/
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static int macsec_drv_set_current_cipher_suite(void *priv, u64 cs)
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{
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+ struct macsec_drv_data *drv = priv;
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+
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wpa_printf(MSG_DEBUG, "%s -> %016" PRIx64, __func__, cs);
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- return 0;
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+
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+ drv->cipher_suite_set = true;
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+ drv->cipher_suite = cs;
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+
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+ return try_commit(drv);
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}
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@@ -1063,7 +1072,8 @@ static int macsec_drv_disable_receive_sa
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}
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-static struct rtnl_link * lookup_sc(struct nl_cache *cache, int parent, u64 sci)
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+static struct rtnl_link * lookup_sc(struct nl_cache *cache, int parent, u64 sci,
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+ u64 cs)
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{
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struct rtnl_link *needle;
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void *match;
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@@ -1074,6 +1084,8 @@ static struct rtnl_link * lookup_sc(stru
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rtnl_link_set_link(needle, parent);
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rtnl_link_macsec_set_sci(needle, sci);
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+ if (cs)
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+ rtnl_link_macsec_set_cipher_suite(needle, cs);
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match = nl_cache_find(cache, (struct nl_object *) needle);
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rtnl_link_put(needle);
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@@ -1098,6 +1110,7 @@ static int macsec_drv_create_transmit_sc
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char *ifname;
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u64 sci;
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int err;
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+ u64 cs = 0;
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wpa_printf(MSG_DEBUG, DRV_PREFIX
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"%s: create_transmit_sc -> " SCISTR " (conf_offset=%d)",
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@@ -1122,6 +1135,12 @@ static int macsec_drv_create_transmit_sc
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drv->created_link = true;
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+ if (drv->cipher_suite_set) {
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+ cs = drv->cipher_suite;
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+ drv->cipher_suite_set = false;
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+ rtnl_link_macsec_set_cipher_suite(link, cs);
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+ }
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+
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err = rtnl_link_add(drv->sk, link, NLM_F_CREATE);
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if (err == -NLE_BUSY) {
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wpa_printf(MSG_INFO,
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@@ -1137,7 +1156,7 @@ static int macsec_drv_create_transmit_sc
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rtnl_link_put(link);
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nl_cache_refill(drv->sk, drv->link_cache);
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- link = lookup_sc(drv->link_cache, drv->parent_ifi, sci);
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+ link = lookup_sc(drv->link_cache, drv->parent_ifi, sci, cs);
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if (!link) {
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wpa_printf(MSG_ERROR, DRV_PREFIX "couldn't find link");
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return -1;
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