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save some memory - no need to embed sc inside struct xennet_rxreq

This commit is contained in:
jdolecek 2020-04-06 10:05:38 +00:00
parent b187e11174
commit 9c39b872db
1 changed files with 7 additions and 12 deletions
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19
sys/arch/xen/xen/if_xennet_xenbus.c
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@ -1,4 +1,4 @@
/* $NetBSD: if_xennet_xenbus.c,v 1.100 2020/04/06 08:26:32 jdolecek Exp $ */
/* $NetBSD: if_xennet_xenbus.c,v 1.101 2020/04/06 10:05:38 jdolecek Exp $ */
/*
* Copyright (c) 2006 Manuel Bouyer.
@ -81,7 +81,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: if_xennet_xenbus.c,v 1.100 2020/04/06 08:26:32 jdolecek Exp $");
__KERNEL_RCSID(0, "$NetBSD: if_xennet_xenbus.c,v 1.101 2020/04/06 10:05:38 jdolecek Exp $");
#include "opt_xen.h"
#include "opt_nfs_boot.h"
@ -177,7 +177,6 @@ struct xennet_rxreq {
/* va/pa for this receive buf. ma will be provided by backend */
paddr_t rxreq_pa;
vaddr_t rxreq_va;
struct xennet_xenbus_softc *rxreq_sc; /* pointer to our interface */
};
struct xennet_xenbus_softc {
@ -225,7 +224,6 @@ static void xennet_alloc_rx_buffer(struct xennet_xenbus_softc *);
static void xennet_free_rx_buffer(struct xennet_xenbus_softc *);
static void xennet_tx_complete(struct xennet_xenbus_softc *);
static void xennet_rx_mbuf_free(struct mbuf *, void *, size_t, void *);
static void xennet_rx_free_req(struct xennet_rxreq *);
static int xennet_handler(void *);
static bool xennet_talk_to_backend(struct xennet_xenbus_softc *);
#ifdef XENNET_DEBUG_DUMP
@ -328,7 +326,6 @@ xennet_xenbus_attach(device_t parent, device_t self, void *aux)
for (i = 0; i < NET_RX_RING_SIZE; i++) {
struct xennet_rxreq *rxreq = &sc->sc_rxreqs[i];
rxreq->rxreq_id = i;
rxreq->rxreq_sc = sc;
rxreq->rxreq_va = (vaddr_t)pool_cache_get_paddr(
if_xennetrxbuf_cache, PR_WAITOK, &rxreq->rxreq_pa);
if (rxreq->rxreq_va == 0)
@ -782,10 +779,8 @@ xennet_rx_mbuf_free(struct mbuf *m, void *buf, size_t size, void *arg)
};
static void
xennet_rx_free_req(struct xennet_rxreq *req)
xennet_rx_free_req(struct xennet_xenbus_softc *sc, struct xennet_rxreq *req)
{
struct xennet_xenbus_softc *sc = req->rxreq_sc;
KASSERT(mutex_owned(&sc->sc_rx_lock));
/* puts back the RX request in the list of free RX requests */
@ -907,7 +902,7 @@ again:
DPRINTFN(XEDB_EVENT,
("xennet_handler bad dest\n"));
/* packet not for us */
xennet_rx_free_req(req);
xennet_rx_free_req(sc, req);
continue;
}
}
@ -915,7 +910,7 @@ again:
if (__predict_false(m == NULL)) {
printf("%s: rx no mbuf\n", ifp->if_xname);
if_statinc(ifp, if_ierrors);
xennet_rx_free_req(req);
xennet_rx_free_req(sc, req);
continue;
}
MCLAIM(m, &sc->sc_ethercom.ec_rx_mowner);
@ -935,7 +930,7 @@ again:
if_statinc(ifp, if_ierrors);
req->rxreq_va = va;
req->rxreq_pa = pa;
xennet_rx_free_req(req);
xennet_rx_free_req(sc, req);
m_freem(m);
continue;
}
@ -950,7 +945,7 @@ again:
else if (rx->flags & NETRXF_data_validated)
m->m_pkthdr.csum_flags = XN_M_CSUM_SUPPORTED;
/* free req may overwrite *rx, better doing it late */
xennet_rx_free_req(req);
xennet_rx_free_req(sc, req);
/* Pass the packet up. */
if_percpuq_enqueue(ifp->if_percpuq, m);