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| author | sam <sam@FreeBSD.org> | 2006-03-15 21:27:08 +0000 |
|---|---|---|
| committer | sam <sam@FreeBSD.org> | 2006-03-15 21:27:08 +0000 |
| commit | abccf6f3e27b07055242c9c80666260c85d09e6a (patch) | |
| tree | 2aad31584f0fefa440237cb6d57aa6bf4822753d /sys/net80211 | |
| parent | 50c2d936c43eb02fa1e63a9481bb1adcef1e5857 (diff) | |
| download | FreeBSD-src-abccf6f3e27b07055242c9c80666260c85d09e6a.zip FreeBSD-src-abccf6f3e27b07055242c9c80666260c85d09e6a.tar.gz | |
when doing s/w crypto make sure work is done w/ a writable mbuf chain;
this corrects problems with drivers that rely on the host to do
crypto (iwi, ipw, ral, ural, wi (hostap), awi)
Hard work by: luigi, mlaier
Reviewed by: luigi, mlaier
MFC after: 1 week
Diffstat (limited to 'sys/net80211')
| -rw-r--r-- | sys/net80211/ieee80211_output.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/sys/net80211/ieee80211_output.c b/sys/net80211/ieee80211_output.c index 919c5a8..9dfbb8d 100644 --- a/sys/net80211/ieee80211_output.c +++ b/sys/net80211/ieee80211_output.c @@ -384,6 +384,21 @@ ieee80211_mbuf_adjust(struct ieee80211com *ic, int hdrsize, /* XXX belongs in crypto code? */ needed_space += key->wk_cipher->ic_header; /* XXX frags */ + /* + * When crypto is being done in the host we must insure + * the data are writable for the cipher routines; clone + * a writable mbuf chain. + * XXX handle SWMIC specially + */ + if (key->wk_flags & (IEEE80211_KEY_SWCRYPT|IEEE80211_KEY_SWMIC)) { + m = m_unshare(m, M_NOWAIT); + if (m == NULL) { + IEEE80211_DPRINTF(ic, IEEE80211_MSG_OUTPUT, + "%s: cannot get writable mbuf\n", __func__); + ic->ic_stats.is_tx_nobuf++; /* XXX new stat */ + return NULL; + } + } } /* * We know we are called just before stripping an Ethernet |
