From 102a0743326a03cd1a1202ceda21e175b7d3575c Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Tue, 20 Feb 2024 01:20:52 +0000
Subject: [PATCH] add new system file
---
kernel/net/packet/internal.h | 34 ++++++++++++++++++++++++++++------
1 files changed, 28 insertions(+), 6 deletions(-)
diff --git a/kernel/net/packet/internal.h b/kernel/net/packet/internal.h
index f102948..3938cb4 100644
--- a/kernel/net/packet/internal.h
+++ b/kernel/net/packet/internal.h
@@ -39,7 +39,7 @@
char *nxt_offset;
struct sk_buff *skb;
- atomic_t blk_fill_in_prog;
+ rwlock_t blk_fill_in_prog_lock;
/* Default is set to 8ms */
#define DEFAULT_PRB_RETIRE_TOV (8)
@@ -77,11 +77,12 @@
};
extern struct mutex fanout_mutex;
-#define PACKET_FANOUT_MAX 256
+#define PACKET_FANOUT_MAX (1 << 16)
struct packet_fanout {
possible_net_t net;
unsigned int num_members;
+ u32 max_num_members;
u16 id;
u8 type;
u8 flags;
@@ -90,10 +91,10 @@
struct bpf_prog __rcu *bpf_prog;
};
struct list_head list;
- struct sock *arr[PACKET_FANOUT_MAX];
spinlock_t lock;
refcount_t sk_ref;
struct packet_type prot_hook ____cacheline_aligned_in_smp;
+ struct sock __rcu *arr[];
};
struct packet_rollover {
@@ -115,10 +116,9 @@
int copy_thresh;
spinlock_t bind_lock;
struct mutex pg_vec_lock;
+ unsigned long flags;
unsigned int running; /* bind_lock must be held */
- unsigned int auxdata:1, /* writer must hold sock lock */
- origdev:1,
- has_vnet_hdr:1,
+ unsigned int has_vnet_hdr:1, /* writer must hold sock lock */
tp_loss:1,
tp_tx_has_off:1;
int pressure;
@@ -135,6 +135,7 @@
struct net_device __rcu *cached_dev;
int (*xmit)(struct sk_buff *skb);
struct packet_type prot_hook ____cacheline_aligned_in_smp;
+ atomic_t tp_drops ____cacheline_aligned_in_smp;
};
static struct packet_sock *pkt_sk(struct sock *sk)
@@ -142,4 +143,25 @@
return (struct packet_sock *)sk;
}
+enum packet_sock_flags {
+ PACKET_SOCK_ORIGDEV,
+ PACKET_SOCK_AUXDATA,
+};
+
+static inline void packet_sock_flag_set(struct packet_sock *po,
+ enum packet_sock_flags flag,
+ bool val)
+{
+ if (val)
+ set_bit(flag, &po->flags);
+ else
+ clear_bit(flag, &po->flags);
+}
+
+static inline bool packet_sock_flag(const struct packet_sock *po,
+ enum packet_sock_flags flag)
+{
+ return test_bit(flag, &po->flags);
+}
+
#endif
--
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