openwrt-packages-dist/libs/libpfring/patches/0002-kernel-pf_ring.c-linux-v5.9-compatibility.patch

--- a/kernel/pf_ring.c
+++ b/kernel/pf_ring.c
@@ -6806,11 +6806,21 @@ int sk_detach_filter(struct sock *sk)
 #endif
 
 /* ************************************* */
+#if(LINUX_VERSION_CODE < KERNEL_VERSION(5,9,0))
+#define copy_from_sockptr copy_from_user
+#define copy_to_sockptr copy_to_user
+#else
+#define copy_to_sockptr(dst,src,size) copy_to_sockptr_offset(dst, 0, src, size)
+#endif
 
 /* Code taken/inspired from core/sock.c */
 static int ring_setsockopt(struct socket *sock,
 			   int level, int optname,
+#if(LINUX_VERSION_CODE < KERNEL_VERSION(5,9,0))
 			   char __user * optval,
+#else
+			   sockptr_t optval,
+#endif
 			   unsigned
 			   int optlen)
 {
@@ -6842,7 +6852,7 @@ static int ring_setsockopt(struct socket
 
       ret = -EFAULT;
 
-      if(copy_from_user(&fprog, optval, sizeof(fprog)))
+      if(copy_from_sockptr(&fprog, optval, sizeof(fprog)))
         break;
 
       if(fprog.len <= 1) { /* empty filter */
@@ -6888,7 +6898,7 @@ static int ring_setsockopt(struct socket
     if(optlen != sizeof(cluster))
       return(-EINVAL);
 
-    if(copy_from_user(&cluster, optval, sizeof(cluster)))
+    if(copy_from_sockptr(&cluster, optval, sizeof(cluster)))
       return(-EFAULT);
 
     write_lock_bh(&pfr->ring_rules_lock);
@@ -6911,7 +6921,7 @@ static int ring_setsockopt(struct socket
     if(optlen != sizeof(channel_id_mask))
       return(-EINVAL);
 
-    if(copy_from_user(&channel_id_mask, optval, sizeof(channel_id_mask)))
+    if(copy_from_sockptr(&channel_id_mask, optval, sizeof(channel_id_mask)))
       return(-EFAULT);
 
     num_channels = 0;
@@ -6967,7 +6977,7 @@ static int ring_setsockopt(struct socket
     if(optlen > sizeof(name) /* Names should not be too long */ )
       return(-EINVAL);
 
-    if(copy_from_user(&name, optval, optlen))
+    if(copy_from_sockptr(&name, optval, optlen))
       return(-EFAULT);
 
     if(pfr->appl_name != NULL)
@@ -6985,7 +6995,7 @@ static int ring_setsockopt(struct socket
     if(optlen != sizeof(direction))
       return(-EINVAL);
 
-    if(copy_from_user(&direction, optval, sizeof(direction)))
+    if(copy_from_sockptr(&direction, optval, sizeof(direction)))
       return(-EFAULT);
 
     pfr->direction = direction;
@@ -6999,7 +7009,7 @@ static int ring_setsockopt(struct socket
     if(optlen != sizeof(sockmode))
       return(-EINVAL);
 
-    if(copy_from_user(&sockmode, optval, sizeof(sockmode)))
+    if(copy_from_sockptr(&sockmode, optval, sizeof(sockmode)))
       return(-EFAULT);
 
     pfr->mode = sockmode;
@@ -7013,7 +7023,7 @@ static int ring_setsockopt(struct socket
     if(optlen != sizeof(rule_inactivity))
       return(-EINVAL);
 
-    if(copy_from_user(&rule_inactivity, optval, sizeof(rule_inactivity)))
+    if(copy_from_sockptr(&rule_inactivity, optval, sizeof(rule_inactivity)))
       return(-EFAULT);
     else {
       write_lock_bh(&pfr->ring_rules_lock);
@@ -7027,7 +7037,7 @@ static int ring_setsockopt(struct socket
     if(optlen != sizeof(rule_inactivity))
       return(-EINVAL);
 
-    if(copy_from_user(&rule_inactivity, optval, sizeof(rule_inactivity)))
+    if(copy_from_sockptr(&rule_inactivity, optval, sizeof(rule_inactivity)))
       return(-EFAULT);
     else {
       write_lock_bh(&pfr->ring_rules_lock);
@@ -7043,7 +7053,7 @@ static int ring_setsockopt(struct socket
     else {
       u_int8_t new_policy;
 
-      if(copy_from_user(&new_policy, optval, optlen))
+      if(copy_from_sockptr(&new_policy, optval, optlen))
 	return(-EFAULT);
 
       write_lock_bh(&pfr->ring_rules_lock);
@@ -7075,7 +7085,7 @@ static int ring_setsockopt(struct socket
       if(rule == NULL)
 	return(-EFAULT);
 
-      if(copy_from_user(&rule->rule, optval, optlen))
+      if(copy_from_sockptr(&rule->rule, optval, optlen))
 	return(-EFAULT);
 
       INIT_LIST_HEAD(&rule->list);
@@ -7099,7 +7109,7 @@ static int ring_setsockopt(struct socket
       if(rule == NULL)
 	return(-EFAULT);
 
-      if(copy_from_user(&rule->rule, optval, optlen))
+      if(copy_from_sockptr(&rule->rule, optval, optlen))
 	return(-EFAULT);
 
       write_lock_bh(&pfr->ring_rules_lock);
@@ -7123,7 +7133,7 @@ static int ring_setsockopt(struct socket
       /* This is a list rule */
       int rc;
 
-      if(copy_from_user(&rule_id, optval, optlen))
+      if(copy_from_sockptr(&rule_id, optval, optlen))
 	return(-EFAULT);
 
       write_lock_bh(&pfr->ring_rules_lock);
@@ -7139,7 +7149,7 @@ static int ring_setsockopt(struct socket
       sw_filtering_hash_bucket rule;
       int rc;
 
-      if(copy_from_user(&rule.rule, optval, optlen))
+      if(copy_from_sockptr(&rule.rule, optval, optlen))
 	return(-EFAULT);
 
       write_lock_bh(&pfr->ring_rules_lock);
@@ -7156,7 +7166,7 @@ static int ring_setsockopt(struct socket
     if(optlen != sizeof(pfr->sample_rate))
       return(-EINVAL);
 
-    if(copy_from_user(&pfr->sample_rate, optval, sizeof(pfr->sample_rate)))
+    if(copy_from_sockptr(&pfr->sample_rate, optval, sizeof(pfr->sample_rate)))
       return(-EFAULT);
     break;
 
@@ -7164,7 +7174,7 @@ static int ring_setsockopt(struct socket
 	  if(optlen != sizeof(pfr->filtering_sample_rate))
 		return(-EINVAL);
 
-	  if(copy_from_user(&pfr->filtering_sample_rate, optval, sizeof(pfr->filtering_sample_rate)))
+	  if(copy_from_sockptr(&pfr->filtering_sample_rate, optval, sizeof(pfr->filtering_sample_rate)))
 		return(-EFAULT);
 
       pfr->filtering_sampling_size = pfr->filtering_sample_rate;
@@ -7231,7 +7241,7 @@ static int ring_setsockopt(struct socket
       else
 	threshold = min_num_slots;
 
-      if(copy_from_user(&pfr->poll_num_pkts_watermark, optval, optlen))
+      if(copy_from_sockptr(&pfr->poll_num_pkts_watermark, optval, optlen))
 	return(-EFAULT);
 
       if(pfr->poll_num_pkts_watermark > threshold)
@@ -7248,7 +7258,7 @@ static int ring_setsockopt(struct socket
 	  if(optlen != sizeof(u_int16_t))
 		return(-EINVAL);
 	  else {
-		if(copy_from_user(&pfr->poll_watermark_timeout, optval, optlen))
+		if(copy_from_sockptr(&pfr->poll_watermark_timeout, optval, optlen))
            return(-EFAULT);
 		debug_printk(2, "--> SO_SET_POLL_WATERMARK_TIMEOUT=%u\n", pfr->poll_watermark_timeout);
 	  }
@@ -7258,7 +7268,7 @@ static int ring_setsockopt(struct socket
     if(optlen != sizeof(u_int32_t))
       return(-EINVAL);
 
-    if(copy_from_user(&pfr->bucket_len, optval, optlen))
+    if(copy_from_sockptr(&pfr->bucket_len, optval, optlen))
       return(-EFAULT);
 
     debug_printk(2, "--> SO_RING_BUCKET_LEN=%d\n", pfr->bucket_len);
@@ -7268,7 +7278,7 @@ static int ring_setsockopt(struct socket
     if(optlen != sizeof(zc_dev_mapping))
       return(-EINVAL);
 
-    if(copy_from_user(&mapping, optval, optlen))
+    if(copy_from_sockptr(&mapping, optval, optlen))
       return(-EFAULT);
 
     debug_printk(2, "SO_SELECT_ZC_DEVICE %s\n", mapping.device_name);
@@ -7278,7 +7288,7 @@ static int ring_setsockopt(struct socket
     else
       ret = pfring_release_zc_dev(pfr);
 
-    if(copy_to_user(optval, &mapping, optlen)) /* returning device_model*/
+    if(copy_to_sockptr(optval, &mapping, optlen)) /* returning device_model*/
       return(-EFAULT);
 
     break;
@@ -7291,7 +7301,7 @@ static int ring_setsockopt(struct socket
     if(optlen != sizeof(ring_id))
       return(-EINVAL);
 
-    if(copy_from_user(&ring_id, optval, sizeof(ring_id)))
+    if(copy_from_sockptr(&ring_id, optval, sizeof(ring_id)))
       return(-EFAULT);
 
     write_lock_bh(&pfr->ring_rules_lock);
@@ -7303,7 +7313,7 @@ static int ring_setsockopt(struct socket
     if(optlen != sizeof(hw_filtering_rule))
       return(-EINVAL);
 
-    if(copy_from_user(&hw_rule, optval, sizeof(hw_rule)))
+    if(copy_from_sockptr(&hw_rule, optval, sizeof(hw_rule)))
       return(-EFAULT);
 
     /* Check if a rule with the same id exists */
@@ -7343,7 +7353,7 @@ static int ring_setsockopt(struct socket
     if(optlen != sizeof(u_int16_t))
       return(-EINVAL);
 
-    if(copy_from_user(&rule_id, optval, sizeof(u_int16_t)))
+    if(copy_from_sockptr(&rule_id, optval, sizeof(u_int16_t)))
       return(-EFAULT);
 
     /* Check if the rule we want to remove exists */
@@ -7381,7 +7391,7 @@ static int ring_setsockopt(struct socket
       if(optlen != sizeof(elem))
 	return(-EINVAL);
 
-      if(copy_from_user(&elem, optval, sizeof(elem)))
+      if(copy_from_sockptr(&elem, optval, sizeof(elem)))
 	return(-EFAULT);
 
       if((pfr->v_filtering_dev = add_virtual_filtering_device(pfr, &elem)) == NULL)
@@ -7402,14 +7412,14 @@ static int ring_setsockopt(struct socket
       if(optlen < sizeof(ccri))
         return(-EINVAL);
 
-      if(copy_from_user(&ccri, optval, sizeof(ccri)))
+      if(copy_from_sockptr(&ccri, optval, sizeof(ccri)))
 	return(-EFAULT);
 
       if(create_cluster_referee(pfr, ccri.cluster_id, &ccri.recovered) < 0)
         return(-EINVAL);
 
       /* copying back the structure (actually we need ccri.recovered only) */
-      if(copy_to_user(optval, &ccri, sizeof(ccri))) {
+      if(copy_to_sockptr(optval, &ccri, sizeof(ccri))) {
         remove_cluster_referee(pfr);
         return(-EFAULT);
       }
@@ -7422,7 +7432,7 @@ static int ring_setsockopt(struct socket
     {
       struct public_cluster_object_info pcoi;
 
-      if(copy_from_user(&pcoi, optval, sizeof(pcoi)))
+      if(copy_from_sockptr(&pcoi, optval, sizeof(pcoi)))
 	return(-EFAULT);
 
       if(publish_cluster_object(pfr, pcoi.cluster_id, pcoi.object_type, pcoi.object_id) < 0)
@@ -7436,7 +7446,7 @@ static int ring_setsockopt(struct socket
     {
       struct lock_cluster_object_info lcoi;
 
-      if(copy_from_user(&lcoi, optval, sizeof(lcoi)))
+      if(copy_from_sockptr(&lcoi, optval, sizeof(lcoi)))
 	return(-EFAULT);
 
       if(lock_cluster_object(pfr, lcoi.cluster_id, lcoi.object_type, lcoi.object_id, lcoi.lock_mask) < 0)
@@ -7450,7 +7460,7 @@ static int ring_setsockopt(struct socket
     {
       struct lock_cluster_object_info lcoi;
 
-      if(copy_from_user(&lcoi, optval, sizeof(lcoi)))
+      if(copy_from_sockptr(&lcoi, optval, sizeof(lcoi)))
 	return(-EFAULT);
 
       if(unlock_cluster_object(pfr, lcoi.cluster_id, lcoi.object_type, lcoi.object_id, lcoi.lock_mask) < 0)
@@ -7465,7 +7475,7 @@ static int ring_setsockopt(struct socket
     if(optlen > (sizeof(pfr->custom_bound_device_name)-1))
       optlen = sizeof(pfr->custom_bound_device_name)-1;
 
-    if(copy_from_user(&pfr->custom_bound_device_name, optval, optlen)) {
+    if(copy_from_sockptr(&pfr->custom_bound_device_name, optval, optlen)) {
       pfr->custom_bound_device_name[0] = '\0';
       return(-EFAULT);
     } else
@@ -7490,7 +7500,7 @@ static int ring_setsockopt(struct socket
     if(optlen > (sizeof(pfr->statsString)-1))
       optlen = sizeof(pfr->statsString)-1;
 
-    if(copy_from_user(&pfr->statsString, optval, optlen)) {
+    if(copy_from_sockptr(&pfr->statsString, optval, optlen)) {
       pfr->statsString[0] = '\0';
       return(-EFAULT);
     }
@@ -7511,7 +7521,7 @@ static int ring_setsockopt(struct socket
       if(optlen != sizeof(u_int32_t))
         return (-EINVAL);
 
-      if(copy_from_user(&enable_promisc, optval, optlen))
+      if(copy_from_sockptr(&enable_promisc, optval, optlen))
         return (-EFAULT);
 
       if(!pfr->ring_dev || pfr->ring_dev == &none_device_element || pfr->ring_dev == &any_device_element) {
@@ -7537,7 +7547,7 @@ static int ring_setsockopt(struct socket
     if(optlen != sizeof(vlan_id))
       return(-EINVAL);
 
-    if(copy_from_user(&vlan_id, optval, sizeof(vlan_id)))
+    if(copy_from_sockptr(&vlan_id, optval, sizeof(vlan_id)))
       return(-EFAULT);
 
     pfr->vlan_id = vlan_id;