(nuttx) 02/02: net/sixlowpan: Fix protosize to 16-bit

[xi...@apache.org]

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xiaoxiang781216 pushed a commit to branch releases/13.0
in repository https://gitbox.apache.org/repos/asf/nuttx.git

commit 96daab367a7fe4fd6ff06a65cff925affccb1ba0
Author: Alan Carvalho de Assis <ac...@gmail.com>
AuthorDate: Sun May 3 15:57:35 2026 -0300

    net/sixlowpan: Fix protosize to 16-bit
    
    There was another small issue on sixlowpan_input.c code, it was
    processing protosize and 8-bit instead of 16-bit.
    
    It was working because the max tcp->tcpoffset was 0xf0, so
    protosize = ((uint16_t)tcp->tcpoffset >> 4) << 2;
    Will be protosize = 15 * 4 = 60 and will fit inside 8-bit.
    
    Signed-off-by: Alan C. Assis <ac...@gmail.com>
---
 net/sixlowpan/sixlowpan_input.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/sixlowpan/sixlowpan_input.c b/net/sixlowpan/sixlowpan_input.c
index 402587c1093..8bf1cbf9dfd 100644
--- a/net/sixlowpan/sixlowpan_input.c
+++ b/net/sixlowpan/sixlowpan_input.c
@@ -318,7 +318,7 @@ static int sixlowpan_frame_process(FAR struct radio_driver_s *radio,
   uint16_t paysize;           /* Size of the data payload */
   uint16_t fragtag   = 0;     /* Tag of the fragment */
   uint8_t fragoffset = 0;     /* Offset of the fragment in the IP packet */
-  uint8_t protosize  = 0;     /* Length of the protocol header (treated like payload) */
+  uint16_t protosize  = 0;    /* Length of the protocol header (treated like payload) */
   bool isfrag        = false; /* true: Frame is a fragment */
   bool isfrag1       = false; /* true: Frame is the first fragment of the series */
   int reqsize;                /* Required buffer size */