* 2 of the License, or (at your option) any later version.
*/
-#include <linux/config.h>
#include <linux/module.h>
#include "dccp.h"
+#include "ccid.h"
#include "feat.h"
#define DCCP_FEAT_SP_NOAGREE (-123)
-int dccp_feat_change(struct sock *sk, u8 type, u8 feature, u8 *val, u8 len,
- gfp_t gfp)
+int dccp_feat_change(struct dccp_minisock *dmsk, u8 type, u8 feature,
+ u8 *val, u8 len, gfp_t gfp)
{
- struct dccp_sock *dp = dccp_sk(sk);
struct dccp_opt_pend *opt;
dccp_pr_debug("feat change type=%d feat=%d\n", type, feature);
+ /* XXX sanity check feat change request */
+
/* check if that feature is already being negotiated */
- list_for_each_entry(opt, &dp->dccps_options.dccpo_pending,
- dccpop_node) {
+ list_for_each_entry(opt, &dmsk->dccpms_pending, dccpop_node) {
/* ok we found a negotiation for this option already */
if (opt->dccpop_feat == feature && opt->dccpop_type == type) {
dccp_pr_debug("Replacing old\n");
BUG_ON(opt->dccpop_val == NULL);
- list_add_tail(&opt->dccpop_node, &dp->dccps_options.dccpo_pending);
+ list_add_tail(&opt->dccpop_node, &dmsk->dccpms_pending);
return 0;
}
EXPORT_SYMBOL_GPL(dccp_feat_change);
+static int dccp_feat_update_ccid(struct sock *sk, u8 type, u8 new_ccid_nr)
+{
+ struct dccp_sock *dp = dccp_sk(sk);
+ struct dccp_minisock *dmsk = dccp_msk(sk);
+ /* figure out if we are changing our CCID or the peer's */
+ const int rx = type == DCCPO_CHANGE_R;
+ const u8 ccid_nr = rx ? dmsk->dccpms_rx_ccid : dmsk->dccpms_tx_ccid;
+ struct ccid *new_ccid;
+
+ /* Check if nothing is being changed. */
+ if (ccid_nr == new_ccid_nr)
+ return 0;
+
+ new_ccid = ccid_new(new_ccid_nr, sk, rx, GFP_ATOMIC);
+ if (new_ccid == NULL)
+ return -ENOMEM;
+
+ if (rx) {
+ ccid_hc_rx_delete(dp->dccps_hc_rx_ccid, sk);
+ dp->dccps_hc_rx_ccid = new_ccid;
+ dmsk->dccpms_rx_ccid = new_ccid_nr;
+ } else {
+ ccid_hc_tx_delete(dp->dccps_hc_tx_ccid, sk);
+ dp->dccps_hc_tx_ccid = new_ccid;
+ dmsk->dccpms_tx_ccid = new_ccid_nr;
+ }
+
+ return 0;
+}
+
/* XXX taking only u8 vals */
static int dccp_feat_update(struct sock *sk, u8 type, u8 feat, u8 val)
{
- /* FIXME implement */
dccp_pr_debug("changing [%d] feat %d to %d\n", type, feat, val);
+
+ switch (feat) {
+ case DCCPF_CCID:
+ return dccp_feat_update_ccid(sk, type, val);
+ default:
+ dccp_pr_debug("IMPLEMENT changing [%d] feat %d to %d\n",
+ type, feat, val);
+ break;
+ }
return 0;
}
case DCCPF_CCID:
/* XXX did i get this right? =P */
if (opt->dccpop_type == DCCPO_CHANGE_L)
- res = &dp->dccps_options.dccpo_tx_ccid;
+ res = &dccp_msk(sk)->dccpms_tx_ccid;
else
- res = &dp->dccps_options.dccpo_rx_ccid;
+ res = &dccp_msk(sk)->dccpms_rx_ccid;
break;
default:
if (rc) {
kfree(opt->dccpop_sc->dccpoc_val);
kfree(opt->dccpop_sc);
- opt->dccpop_sc = 0;
+ opt->dccpop_sc = NULL;
return rc;
}
static int dccp_feat_sp(struct sock *sk, u8 type, u8 feature, u8 *val, u8 len)
{
- struct dccp_sock *dp = dccp_sk(sk);
+ struct dccp_minisock *dmsk = dccp_msk(sk);
struct dccp_opt_pend *opt;
int rc = 1;
u8 t;
t = DCCPO_CHANGE_L;
/* find our preference list for this feature */
- list_for_each_entry(opt, &dp->dccps_options.dccpo_pending,
- dccpop_node) {
+ list_for_each_entry(opt, &dmsk->dccpms_pending, dccpop_node) {
if (opt->dccpop_type != t || opt->dccpop_feat != feature)
continue;
static int dccp_feat_nn(struct sock *sk, u8 type, u8 feature, u8 *val, u8 len)
{
struct dccp_opt_pend *opt;
- struct dccp_sock *dp = dccp_sk(sk);
+ struct dccp_minisock *dmsk = dccp_msk(sk);
u8 *copy;
int rc;
}
dccp_pr_debug("Confirming NN feature %d (val=%d)\n", feature, *copy);
- list_add_tail(&opt->dccpop_node, &dp->dccps_options.dccpo_conf);
+ list_add_tail(&opt->dccpop_node, &dmsk->dccpms_conf);
return 0;
}
-static void dccp_feat_empty_confirm(struct sock *sk, u8 type, u8 feature)
+static void dccp_feat_empty_confirm(struct dccp_minisock *dmsk,
+ u8 type, u8 feature)
{
- struct dccp_sock *dp = dccp_sk(sk);
/* XXX check if other confirms for that are queued and recycle slot */
struct dccp_opt_pend *opt = kzalloc(sizeof(*opt), GFP_ATOMIC);
opt->dccpop_type = type == DCCPO_CHANGE_L ? DCCPO_CONFIRM_R :
DCCPO_CONFIRM_L;
opt->dccpop_feat = feature;
- opt->dccpop_val = 0;
+ opt->dccpop_val = NULL;
opt->dccpop_len = 0;
/* change feature */
dccp_pr_debug("Empty confirm feature %d type %d\n", feature, type);
- list_add_tail(&opt->dccpop_node, &dp->dccps_options.dccpo_conf);
+ list_add_tail(&opt->dccpop_node, &dmsk->dccpms_conf);
}
static void dccp_feat_flush_confirm(struct sock *sk)
{
- struct dccp_sock *dp = dccp_sk(sk);
+ struct dccp_minisock *dmsk = dccp_msk(sk);
/* Check if there is anything to confirm in the first place */
- int yes = !list_empty(&dp->dccps_options.dccpo_conf);
+ int yes = !list_empty(&dmsk->dccpms_conf);
if (!yes) {
struct dccp_opt_pend *opt;
- list_for_each_entry(opt, &dp->dccps_options.dccpo_pending,
- dccpop_node) {
+ list_for_each_entry(opt, &dmsk->dccpms_pending, dccpop_node) {
if (opt->dccpop_conf) {
yes = 1;
break;
* mandatory
*/
if (rc != DCCP_FEAT_SP_NOAGREE)
- dccp_feat_empty_confirm(sk, type, feature);
+ dccp_feat_empty_confirm(dccp_msk(sk), type, feature);
}
/* generate the confirm [if required] */
{
u8 t;
struct dccp_opt_pend *opt;
- struct dccp_sock *dp = dccp_sk(sk);
+ struct dccp_minisock *dmsk = dccp_msk(sk);
int rc = 1;
int all_confirmed = 1;
/* locate our change request */
t = type == DCCPO_CONFIRM_L ? DCCPO_CHANGE_R : DCCPO_CHANGE_L;
- list_for_each_entry(opt, &dp->dccps_options.dccpo_pending,
- dccpop_node) {
+ list_for_each_entry(opt, &dmsk->dccpms_pending, dccpop_node) {
if (!opt->dccpop_conf && opt->dccpop_type == t &&
opt->dccpop_feat == feature) {
/* we found it */
EXPORT_SYMBOL_GPL(dccp_feat_confirm_recv);
-void dccp_feat_clean(struct sock *sk)
+void dccp_feat_clean(struct dccp_minisock *dmsk)
{
- struct dccp_sock *dp = dccp_sk(sk);
struct dccp_opt_pend *opt, *next;
- list_for_each_entry_safe(opt, next, &dp->dccps_options.dccpo_pending,
+ list_for_each_entry_safe(opt, next, &dmsk->dccpms_pending,
dccpop_node) {
BUG_ON(opt->dccpop_val == NULL);
kfree(opt->dccpop_val);
kfree(opt);
}
- INIT_LIST_HEAD(&dp->dccps_options.dccpo_pending);
+ INIT_LIST_HEAD(&dmsk->dccpms_pending);
- list_for_each_entry_safe(opt, next, &dp->dccps_options.dccpo_conf,
- dccpop_node) {
+ list_for_each_entry_safe(opt, next, &dmsk->dccpms_conf, dccpop_node) {
BUG_ON(opt == NULL);
if (opt->dccpop_val != NULL)
kfree(opt->dccpop_val);
kfree(opt);
}
- INIT_LIST_HEAD(&dp->dccps_options.dccpo_conf);
+ INIT_LIST_HEAD(&dmsk->dccpms_conf);
}
EXPORT_SYMBOL_GPL(dccp_feat_clean);
*/
int dccp_feat_clone(struct sock *oldsk, struct sock *newsk)
{
- struct dccp_sock *olddp = dccp_sk(oldsk);
- struct dccp_sock *newdp = dccp_sk(newsk);
+ struct dccp_minisock *olddmsk = dccp_msk(oldsk);
+ struct dccp_minisock *newdmsk = dccp_msk(newsk);
struct dccp_opt_pend *opt;
int rc = 0;
- INIT_LIST_HEAD(&newdp->dccps_options.dccpo_pending);
- INIT_LIST_HEAD(&newdp->dccps_options.dccpo_conf);
+ INIT_LIST_HEAD(&newdmsk->dccpms_pending);
+ INIT_LIST_HEAD(&newdmsk->dccpms_conf);
- list_for_each_entry(opt, &olddp->dccps_options.dccpo_pending,
- dccpop_node) {
+ list_for_each_entry(opt, &olddmsk->dccpms_pending, dccpop_node) {
struct dccp_opt_pend *newopt;
/* copy the value of the option */
u8 *val = kmalloc(opt->dccpop_len, GFP_ATOMIC);
/* insert the option */
memcpy(newopt, opt, sizeof(*newopt));
newopt->dccpop_val = val;
- list_add_tail(&newopt->dccpop_node,
- &newdp->dccps_options.dccpo_pending);
+ list_add_tail(&newopt->dccpop_node, &newdmsk->dccpms_pending);
/* XXX what happens with backlogs and multiple connections at
* once...
*/
/* the master socket no longer needs to worry about confirms */
- opt->dccpop_sc = 0; /* it's not a memleak---new socket has it */
+ opt->dccpop_sc = NULL; /* it's not a memleak---new socket has it */
/* reset state for a new socket */
opt->dccpop_conf = 0;
return rc;
out_clean:
- dccp_feat_clean(newsk);
+ dccp_feat_clean(newdmsk);
rc = -ENOMEM;
goto out;
}
EXPORT_SYMBOL_GPL(dccp_feat_clone);
-static int __dccp_feat_init(struct sock *sk, u8 type, u8 feat, u8 *val, u8 len)
+static int __dccp_feat_init(struct dccp_minisock *dmsk, u8 type, u8 feat,
+ u8 *val, u8 len)
{
int rc = -ENOMEM;
u8 *copy = kmalloc(len, GFP_KERNEL);
if (copy != NULL) {
memcpy(copy, val, len);
- rc = dccp_feat_change(sk, type, feat, copy, len, GFP_KERNEL);
+ rc = dccp_feat_change(dmsk, type, feat, copy, len, GFP_KERNEL);
if (rc)
kfree(copy);
}
return rc;
}
-int dccp_feat_init(struct sock *sk)
+int dccp_feat_init(struct dccp_minisock *dmsk)
{
- struct dccp_sock *dp = dccp_sk(sk);
int rc;
- INIT_LIST_HEAD(&dp->dccps_options.dccpo_pending);
- INIT_LIST_HEAD(&dp->dccps_options.dccpo_conf);
+ INIT_LIST_HEAD(&dmsk->dccpms_pending);
+ INIT_LIST_HEAD(&dmsk->dccpms_conf);
/* CCID L */
- rc = __dccp_feat_init(sk, DCCPO_CHANGE_L, DCCPF_CCID,
- &dp->dccps_options.dccpo_tx_ccid, 1);
+ rc = __dccp_feat_init(dmsk, DCCPO_CHANGE_L, DCCPF_CCID,
+ &dmsk->dccpms_tx_ccid, 1);
if (rc)
goto out;
/* CCID R */
- rc = __dccp_feat_init(sk, DCCPO_CHANGE_R, DCCPF_CCID,
- &dp->dccps_options.dccpo_rx_ccid, 1);
+ rc = __dccp_feat_init(dmsk, DCCPO_CHANGE_R, DCCPF_CCID,
+ &dmsk->dccpms_rx_ccid, 1);
if (rc)
goto out;
/* Ack ratio */
- rc = __dccp_feat_init(sk, DCCPO_CHANGE_L, DCCPF_ACK_RATIO,
- &dp->dccps_options.dccpo_ack_ratio, 1);
+ rc = __dccp_feat_init(dmsk, DCCPO_CHANGE_L, DCCPF_ACK_RATIO,
+ &dmsk->dccpms_ack_ratio, 1);
out:
return rc;
}
projects / karo-tx-linux.git / blobdiff