Add a fastpath to allocate from packet zone when using m_getjcl.

This will add support for packet zone for at least igb and ixgbe
and will avoid to check for that in bce and mxge.

MFC after: 1 week

3 files changed, 6 insertions, 9 deletions

diff --git a/sys/dev/bce/if_bce.c b/sys/dev/bce/if_bce.c
index 6608dbde2c1b..ad7209e7fd59 100644
--- a/sys/dev/bce/if_bce.c
+++ b/sys/dev/bce/if_bce.c
@@ -5059,11 +5059,8 @@ bce_get_rx_buf(struct bce_softc *sc, struct mbuf *m, u16 *prod,
 #ifdef BCE_JUMBO_HDRSPLIT
 		MGETHDR(m_new, M_DONTWAIT, MT_DATA);
 #else
-		if (sc->rx_bd_mbuf_alloc_size <= MCLBYTES)
-			m_new = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR);
-		else
-			m_new = m_getjcl(M_DONTWAIT, MT_DATA, M_PKTHDR,
-			    sc->rx_bd_mbuf_alloc_size);
+		m_new = m_getjcl(M_DONTWAIT, MT_DATA, M_PKTHDR,
+		    sc->rx_bd_mbuf_alloc_size);
 #endif
 
 		if (m_new == NULL) {
diff --git a/sys/dev/mxge/if_mxge.c b/sys/dev/mxge/if_mxge.c
index 956b1aa2dbb3..e5a34bc70ed3 100644
--- a/sys/dev/mxge/if_mxge.c
+++ b/sys/dev/mxge/if_mxge.c
@@ -2400,10 +2400,7 @@ mxge_get_buf_big(struct mxge_slice_state *ss, bus_dmamap_t map, int idx)
 	mxge_rx_ring_t *rx = &ss->rx_big;
 	int cnt, err, i;
 
-	if (rx->cl_size == MCLBYTES)
-		m = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR);
-	else
-		m = m_getjcl(M_DONTWAIT, MT_DATA, M_PKTHDR, rx->cl_size);
+	m = m_getjcl(M_DONTWAIT, MT_DATA, M_PKTHDR, rx->cl_size);
 	if (m == NULL) {
 		rx->alloc_fail++;
 		err = ENOBUFS;
diff --git a/sys/sys/mbuf.h b/sys/sys/mbuf.h
index 158edb4fdc2d..95a44a4aecfc 100644
--- a/sys/sys/mbuf.h
+++ b/sys/sys/mbuf.h
@@ -523,6 +523,9 @@ m_getjcl(int how, short type, int flags, int size)
 	struct mbuf *m, *n;
 	uma_zone_t zone;
 
+	if (size == MCLBYTES)
+		return m_getcl(how, type, flags);
+
 	args.flags = flags;
 	args.type = type;