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mka: Fix getting capabilities from the driver

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In commit a25e4efc9e ('mka: Add driver op
to get macsec capabilities') I added some code to check the driver's
capabilities. This commit has two problems:
 - wrong enum type set in kay->macsec_confidentiality
 - ignores that drivers could report MACSEC_CAP_NOT_IMPLEMENTED, in
   which case the MKA would claim that MACsec is supported.

Fix this by interpreting MACSEC_CAP_NOT_IMPLEMENTED in the same way as a
DO_NOT_SECURE policy, and set the correct value in
kay->macsec_confidentiality.

Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
This commit is contained in:
Sabrina Dubroca 2016-11-15 18:06:23 +01:00 committed by Jouni Malinen
parent 242fc738a0
commit 088d53dd15
1 changed files with 9 additions and 7 deletions
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16
src/pae/ieee802_1x_kay.c
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@ -3111,7 +3111,14 @@ ieee802_1x_kay_init(struct ieee802_1x_kay_ctx *ctx, enum macsec_policy policy,
dl_list_init(&kay->participant_list);
if (policy == DO_NOT_SECURE) {
if (policy != DO_NOT_SECURE &&
secy_get_capability(kay, &kay->macsec_capable) < 0) {
os_free(kay);
return NULL;
}
if (policy == DO_NOT_SECURE ||
kay->macsec_capable == MACSEC_CAP_NOT_IMPLEMENTED) {
kay->macsec_capable = MACSEC_CAP_NOT_IMPLEMENTED;
kay->macsec_desired = FALSE;
kay->macsec_protect = FALSE;
@ -3120,11 +3127,6 @@ ieee802_1x_kay_init(struct ieee802_1x_kay_ctx *ctx, enum macsec_policy policy,
kay->macsec_replay_window = 0;
kay->macsec_confidentiality = CONFIDENTIALITY_NONE;
} else {
if (secy_get_capability(kay, &kay->macsec_capable) < 0) {
os_free(kay);
return NULL;
}
kay->macsec_desired = TRUE;
kay->macsec_protect = TRUE;
kay->macsec_validate = Strict;
@ -3133,7 +3135,7 @@ ieee802_1x_kay_init(struct ieee802_1x_kay_ctx *ctx, enum macsec_policy policy,
if (kay->macsec_capable >= MACSEC_CAP_INTEG_AND_CONF)
kay->macsec_confidentiality = CONFIDENTIALITY_OFFSET_0;
else
kay->macsec_confidentiality = MACSEC_CAP_INTEGRITY;
kay->macsec_confidentiality = CONFIDENTIALITY_NONE;
}
wpa_printf(MSG_DEBUG, "KaY: state machine created");