slirp: add a callback to log guest errors
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
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@ -23,6 +23,7 @@
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*/
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#include "qemu/osdep.h"
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#include "qemu/log.h"
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#include "net/slirp.h"
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@ -140,8 +141,14 @@ static NetClientInfo net_slirp_info = {
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.cleanup = net_slirp_cleanup,
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};
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static void net_slirp_guest_error(const char *msg)
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{
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qemu_log_mask(LOG_GUEST_ERROR, "%s", msg);
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}
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static const SlirpCb slirp_cb = {
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.output = net_slirp_output,
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.guest_error = net_slirp_guest_error,
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};
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static int net_slirp_init(NetClientState *peer, const char *model,
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@ -50,7 +50,7 @@ struct requested_infos {
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* the odata region, thus the caller must keep odata valid as long as it
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* needs to access the requested_infos struct.
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*/
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static int dhcpv6_parse_info_request(uint8_t *odata, int olen,
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static int dhcpv6_parse_info_request(Slirp *slirp, uint8_t *odata, int olen,
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struct requested_infos *ri)
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{
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int i, req_opt;
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@ -61,7 +61,7 @@ static int dhcpv6_parse_info_request(uint8_t *odata, int olen,
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int len = odata[2] << 8 | odata[3];
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if (len + 4 > olen) {
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qemu_log_mask(LOG_GUEST_ERROR, "Guest sent bad DHCPv6 packet!\n");
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slirp->cb->guest_error("Guest sent bad DHCPv6 packet!");
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return -E2BIG;
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}
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@ -121,7 +121,7 @@ static void dhcpv6_info_request(Slirp *slirp, struct sockaddr_in6 *srcsas,
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struct mbuf *m;
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uint8_t *resp;
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if (dhcpv6_parse_info_request(odata, olen, &ri) < 0) {
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if (dhcpv6_parse_info_request(slirp, odata, olen, &ri) < 0) {
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return;
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}
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@ -342,8 +342,7 @@ static void ndp_input(struct mbuf *m, Slirp *slirp, struct ip6 *ip,
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case ICMP6_NDP_RA:
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DEBUG_CALL(" type = Router Advertisement");
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qemu_log_mask(LOG_GUEST_ERROR,
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"Warning: guest sent NDP RA, but shouldn't");
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slirp->cb->guest_error("Warning: guest sent NDP RA, but shouldn't");
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break;
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case ICMP6_NDP_NS:
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@ -376,7 +375,7 @@ static void ndp_input(struct mbuf *m, Slirp *slirp, struct ip6 *ip,
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case ICMP6_NDP_REDIRECT:
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DEBUG_CALL(" type = Redirect");
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qemu_log_mask(LOG_GUEST_ERROR,
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slirp->cb->guest_error(
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"Warning: guest sent NDP REDIRECT, but shouldn't");
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break;
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}
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@ -13,6 +13,8 @@ typedef struct Slirp Slirp;
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typedef struct SlirpCb {
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/* Send an ethernet frame to the guest network. */
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void (*output)(void *opaque, const uint8_t *pkt, int pkt_len);
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/* Print a message for an error due to guest misbehavior. */
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void (*guest_error)(const char *msg);
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} SlirpCb;
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